Harley Iron 883 to 1275 Build (Ep. 05)

Building a Harley Iron 883 into a 1275cc big bore Sportster, episode 05! In this episode, we install a larger throttle body, manifold, and high flow intake, tune it up and see our new horsepower numbers!
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Harley Iron 883 to 1275 Build:
Episode 01 - • Harley Iron 883 to 127...
Episode 02 - • Harley Iron 883 to 127...
Episode 03 - • Harley Iron 883 to 127...
Episode 04 - • Harley Iron 883 to 127...
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[@BlockheadMoto]

BEFORE watching, post your guesses for the new horsepower and torque numbers!

[@andrewporter386]

121 hp 95 tq

[@davidmcgowan3700]

I reckon 120hp with 93tq

[@sunvalleyrider5790]

125hp, 98tq Edit: I'd be so p*ssed

[@nbowling10trio]

123hp,91tq

[@clubstyleridahd4695]

I know they really stress the patriot defender exhaust as the main way for hitting those big power numbers. But they no longer sell that exhaust

[@hollowell427]

2009 XR1200 crank. It's a weight savings of about 4lbs on the crank. There's ur 10+ hp. That's what I have in my 1207 with hammer porting,600 cams, intake, s&s roller rockers. Hasn't been to the dyno. But it was put together with the stock crank and I wasn't happy. Bought the xr crank and rods and the other components needed took it all apart. Put it all back to together and seat of the pants dyno plus a few runs at the race track confirm it picked up power. Went from a 12.53 to 12.19 quarter mile. Keep in mind I weigh 255lbs. Plus the bike. Oh by the way my bike is a 05 carb bike not fi. Only a 42 mm mikuni with Daytona twin tec ignition.

[@packet_01]

The amount of things ive learned from this channel in the past month has been insane.

[@BlockheadMoto]

That’s awesome! Glad the vids have been helpful 🤘🏼

[@sl4305]

Kudos... you have a kick ass sleeper Iron that can probably leave some unsuspecting softail rider in the dust off the line! I converted my 18' Iron to 1200 with the screamin eagle kit and upgraded injectors, throttle body, heavy breather, magna flow 2-1, TTS tune and I get 90 hp and 80 lb-ft torque. I also threw on a pair of Legend Rev ARC shocks. It handles the freeway better than my stock Ultra Limited air shocks.

[@hossphoenix4272]

The fuel cap is the problem.

[@Paul20661]

XD

[@BlockheadMoto]

Damn my lack of experience! 😭

[@BobBob-fp5fn]

Seems like the patriot defender exhaust is what’s helping with that 10 extra hp. 90% of the bikes make 120+hp on hammers website are using that exhaust, sadly I don’t think they make it anymore.

[@BlockheadMoto]

Unfortunately can’t find them anywhere, we’ve looked high and low!

[@BFG100K]

@@BlockheadMoto They were made in Taiwan until the factory there got damaged in a fire. It is strange that they decided not to restart production somewhere else. They could sell a lot of those exhausts. At least one to me.. ;-)

[@playbravo]

@@BFG100K and to me 😁

[@BobBob-fp5fn]

@@BlockheadMoto Its too bad, hopefully one will show up sometime. Someone has to have one out there somewhere

[@CraigSmith568]

Nice bike. Love the sound of this thing at idle. The paint isn't quite my style, but to each their own. Would be interesting to see a breakdown of the cost at the end.

[@dragkid185]

With the way it noses over, your having pumping losses and the only thing now that could cause that is the exhaust. I'd put a magnaflow f-bomb on there and see if you can crack 120hp.

[@rustbeltflow3523]

Well....there is one other thing that causes that . I have a set of their 2.0” intake ”Sledge” Twin Cam heads with over 210fps velocity gradient from port floor to roof. 440fps + with terrible separation over the short turn after .25D and it's one of the nosiest ports I've ever tested . The gradient is so bad the top quarter of the port flows backwards intermittently and flow stalls totally just shy of .600 lift. Granted , this was a set of Twin Cam heads but I too was 10hp (actually 11) short of the ”as promised” figure . There were several other issues with the whole process that I'll detail in another post but my experience was eerily similar to what you see here . Caveat Emptor

[@cyberpunk4622]

Hey man, do you have a turbo for that OG?? You'd be a lot cooler if you did.. Alright, alright, alright!

[@arsyadgafli8749]

would love to see that on this channel

[@BlockheadMoto]

Lol, trying to go NA but we’ll see! 😈

[@ItsKvasir]

My dog never watches the tv but he saw Chris and his ears perked up and tilted his head. So I think that means you’re cool Chris :)

[@powershift1365]

My money is on the exhaust that is the kink in the system. If everything when it comes to the engine mechanically is the same as Hammer's 120hp kit (heads, cams, pistons, etc) then the only thing that your bike does *not* have that theirs does is the Patriot Defender pipe. Go look at Hammer's XL exhaust dyno library where they've compiled dyno sheets from several exhaust setups and ran them back to back with the Patriot Defender. Only about 3 exhaust setups were able to come within ~1 to 1.5hp of the Defender, at the cost of suffering somewhere in the powerband compared to the Defender. Hammer has a dyno sheet of the D&D Bobcat with two different baffles compared to the Defender and still came up short. At the end of the day Block, dyno sheets are just numbers on a piece of paper. You own your shit after it all and if someone wants to talk smack about their dyno sheet to yours, tell em to lay it on the blacktop and find out whose bike really *is* faster. Love the build, love what you've been doing with it and can't wait to see what else is in store for the Sporty!

[@Jack2023]

Maybe try a different exhaust, i know this one is supose to be good at making power but maybe 100-110hp and 8k rev is too much. I have the 110hp kit with rush slip-on. On their dynosheet they made 117hp with a 110hp kit. I will go on the dyno soon to see the number for mine

[@codester0719]

The bikes turning out great. As with all builds there’ll be a speed bump here and there. Absolutely love the content Blockhead 🤙🏼 and gotta say, that paint job is 👌🏼 really catches the eye, turned out great! Keep up the awesome content Block👊🏼

[@BlockheadMoto]

Thanks man!

[@juliusryland8597]

Are you absolutely positive of the fuel hammer is using for their 130+ hp numbers? In most other racing and performance platforms (drag racing, auto cross, etc. ) the rules regulate the fuels due to the performance advantage. These classes have people with the same exact builds but different modern fuels that allow for insane power and time differences. A good fuel can make it safe to add timing and lean on cheaper builds where privateers can compete with big factory teams.

[@coolkatz9012]

Chris is a awesome dude and tech specialist.

[@fwg1961]

I did a 2009 HD XR1200 with the Hammer 1275 big bore kit and Zippers red shift cams. I can't remember the model of cams, but it was what was recommended by Hammer. Ended up with 110HP and 91ftpds at the rear tire. The shop that did the tune said they could get a little bit more out of it. But his words were, engines running on the rich side don't burn up.

[@pcontiman]

That sounds like a BAD bike. Do you know what made the XR higher HP than the xl in the stock form anyway ?

[@fwg1961]

@@pcontiman basically it had Buell heads on it.

[@ForzaRacing807]

A Colour matched air cleaner cover with “OG Sportster” pin striped or your logo font! Would look sick!!

[@ChrisMowers]

100% need a crank/rods buddy. My friend had a very similar issue and didn't see the numbers he was expecting until the crack/rods were changed out. Ill see if he has a graph of his pull

[@BlockheadMoto]

That’d be awesome to see his! Thanks for the info 👊🏼

[@playbravo]

I have the same problem. Next week i will install buell xb12r crank and then will see on the dyno

[@playbravo]

Same power with new xr1200 crank =/

[@ProtoArcGaming987]

Dude ether way that's a badass sportster and the shit you do for this channel and the followers and to your bikes are amazing keep up the hard work man!

[@BlockheadMoto]

Appreciate the kind words and support, means a lot, thanks man! 👊🏼

[@hutch814]

Had a 110 fully built on a cvo superglide with 115hp/115tq to the tire and agree that you do not need a chain drive. Never snapped a belt and i rode the piss out of it.

[@vernegibb621]

Great video sorry you did not get what you paid for. But you got a bad ass 111hp sporster. You put the sport back into the sporster.

[@BlockheadMoto]

Thanks man! All good, we’re not done 😈

[@marcusj17]

Wonder if Cheyleesi is doing air inake covers

[@joshuapassey2134]

GIRLS BIKE!! for the air cleaner. i love it! Just keep doin what you're doin brother!!! great content!!!!!!!!

[@karlhockenberry9130]

In pink . Lol would shut the old couch riders up.

[@blondiejoe]

Eleventy-one horsepower. Didn't know you were doing the Bilbo Bagger kit. Sick bro.

[@SportyRider]

Even Harley advertises HP and Torque numbers at the crank. She's a freaking beast dude!

[@BlockheadMoto]

Yeah she’s a ripper, but we want 120 at the wheels! 😁

[@SportyRider]

@@BlockheadMoto I am sure you will get it too 😂😂

[@tylergraff4818]

@@BlockheadMoto feed it the bottle

[@tonyheymunkets]

Love that you are working on the iron 883 . I got a 2018 iron you helped me make that decision I know you're shooting for 120 but 111 is freaking crazy the bike looks freaking awesome I still think you need to do a chain upgrade

[@ghostdog1874]

Blockhead my friend , would you be interested in selling me your stock manifold that Hammer Preformance ported for you please? I’d be willing to pay for it and send you a stock manifold as well . Please let me know if your interested in selling it . I already have a hammer 1275 kit and hammer impact ported heads . I’d love to buy that stock ported manifold if you don’t have any plans for it . I’m a big fan and I appreciate all you do buddy . Thanks man

[@clum262]

Better messaging him on Instagram

[@ghostdog1874]

@@clum262 thank you , believe it or not I don’t have Instagram . Shocker I know

[@ghostdog1874]

@@clum262 I tried to email him on Instagram like you said .no response. But hey I’m sure he’s a busy man . Hopefully I get a yes or no sometime in the future. Hate to think it may just sit on a shelf somewhere and not get much use .

[@jaydye0308]

I would have been frustrated too! If there is anyone that can figure it out Super Cool Guy can. You all got this!

[@doncaruso1949]

Gotta have that Publix chicken.😋

[@BlockheadMoto]

Hell yeah!

[@s.v.gadder1443]

Im running the 1275 kit, with superstock heads 30deg 10:5 pistons, the belt is good for about 100hp, panther makes a belt good for 200... stay with a belt you'll stretch chains...... ive built 2 of these on multiple interations....

[@s.v.gadder1443]

Are ypu using the same cams and exaust they did?

[@donwinburn5701]

I did a 2020 883, and mine rips. 1275, 560cam, full target tune system, Vance & Hines 2 into 1, full open filter, up sized front belt pulley, and 1200 screaming eagle heads with .30 head gasket.. 560 is the biggest cam I can run so I don't hit the pistons. 210psi compression. If you want the 10 more horse power to the ground do a chain conversion. You'll add about 10% to the rear wheel from power loss in the belt.

[@pyrolysis2129]

That paint job is 🌋amazing. I love this build! Quality content as usual, thanks.

[@billcobb9408]

I had 2"100 intake valves, 30 degree domed pistons,stock buell 2000, crank and rods, The case was bored. 585 Red shift cams. Aaron knows the bike.

[@heyomyst82]

Slap a Trask turbo on it! I haven't been able to find any videos on hammer's 120hp kit with Trasks turbo kit

[@tonytillman3953]

Have to go with a custom piston, compression ratio way too high.

[@BlockheadMoto]

Yup, what Tony said. They’re not designed for turbos, I already might have inquired 😅

[@clubstyleridahd4695]

That exhaust is sick

[@briansakers6798]

Use a cd it fits perfect on that air filter setup . Old maiden one with eddie on it be cool.

[@mrvwbug4423]

So 2 things I can think of for the missing power. A) was Hammer Performance's example bike chain drive? The vibration through that belt has to be sapping some power. B) if their example bike was in fact belt, the throttle body and intake manifold is clearly not the choke point in the engine, so guessing either heads need some porting, or needs a hotter cam because it's clearly not revving out as much as it could be. Higher compression pistons might help too, but if you're already pushing the limits of 91 octane pump gas that may be a non-starter. Love the exhaust on that though, that motor sounds like a beast

[@Jarhead6820]

That bike…looks magnificent

[@BlockheadMoto]

Thanks!

[@Jarhead6820]

@@BlockheadMoto Thinking of getting a street bob as a first, and permanent bike. Yay or nay

[@toine0002]

On that table the only thing not made of plastics is the cake

[@boxcarbro3043]

I always wanted to get that kit when i had my sporty.

[@biggieswoles1246]

Hell yeah!! Was just wondering yesterday when this video was gonna drop.

[@neilbrown82]

What brand and model air cleaner are you running? And you said something about wanting inverted front end why not swap to a roadster front end with dual disc brakes and add some Legends suspension to the bike

[@grimsventure4439]

This makes me regret turning down that HD Iron a couples months ago. You still have a kickass sportster ✌️

[@matthewheade9788]

Just curious, how far down the pipeline is the roadglide content? Im excited to see what you'll do with it.

[@BlockheadMoto]

Update video this week! Filming a vid today on it actually 🤘🏼

[@matthewheade9788]

@@BlockheadMoto 😎

[@Paul20661]

OMG Chris with that shirt ❄️

[@oliverdavis1910]

There's 10 to 15 horse hiding in there, even with correction factors, dyno tuning tuning is still sensative to ambient atmosphere conditions, maybe try for another day. And as differences in the rotating assembly, to my knowledge there's not a lot you can do with the rubbermounts that isn't expensive custom machine work, other than going to lighter carrillo rods. It not like to old frame mounts were you could press in the knife edge buell flywheels for about 10 HP. And if you do split the cases and go into the lower end, you might as well bore them to fit an 88inch kit.

[@beardedforlife3740]

Actually those xr1200/xb crank and flywheel assemblies are a direct fit in the rubber mount bikes. The ridgid mount bikes actually need machine work to fit the crank setup. I'm also pretty sure it doesn't free up 10hp

[@oliverdavis1910]

@@beardedforlife3740 I was thinking of the older pre-2000 knife-edged flywheel cranks from the Thunderstorm engines for frame-mounted sportsters. They're screwed together and considered serviceable, with more available choices on connecting rods. But the XB/XL cranks you brought up are all the same after 2008, and a good upgrade if you have an older rubbermount. But like any harley crank after 2000, they're a pressed together and are considered non-serviceable, so any changes to the crank like different rods, are going to be considerably more involved, so weren't as many options for parts with those cranks.

[@beardedforlife3740]

@@oliverdavis1910 I believe the xb/xr cranks already come with lightweight rods, but I see what you mean in the event you bend a rod. At that point it's probably cheaper to just buy a new crank assembly. Also it doesn't have to be just an older rubber mount. They are a good upgrade for any rubber mount and even the older ridgid mount bikes

[@oliverdavis1910]

@@beardedforlife3740 Its always cheaper to replace the crank as a unit, especially since after 2000. I think that's the only way they were sold anymore. And any Rubbermount sporty or XB buell made after 2008 is going to have that crank. And its a good one just for the larger splines and bigger diameter crank pin alone, in addition to being lighter. If Carillo readily made rods for them, and you could get those rods onto the crank without having to press it all apart, that'd be the way to go. The Carillo rods are far lighter and stronger than anything put out by the factory, and really shine are higher RPM, as well as any weight reduction in the lower end can. As far with frame-mounts, by the time you machine it for fitment with a 2008 XB/XL crank, I feel you'd be right about there in price with aftermarket crank like S&S or built up thunderstorm/carillo crank that are direct fits.

[@beardedforlife3740]

@@oliverdavis1910 you can get carillo rods and the Sportster aside from the XR1200 never came with that crank assembly

[@f_r_e_d]

looking real good

[@pcontiman]

Great series, thanks

[@sinner1t]

This depresses my depression lol 😂

[@3800slomaro]

I wonder if its just that exhaust. Hammer uses the patriot defender on their test bikes but they went out of production. It was just about the best all around and top end HP pipe for a built sportster. Curious to see what they say. They supposedly shoot low on their estimates so people dont get upset. It should do 120plus

[@BlockheadMoto]

Wish I could find one of those exhausts so we could put it to the test!

[@caseyjones1522]

Did hammer port the hpi throttle body too? Cause if not that’s why it was about the same as the ported stock setup. I doubt you’re gonna get 10hp out of that thing though maybe like 3-4 after hammer ports it

[@CubanRedneck]

…hey bud, great channel. I have built one of these before, and there is a couple of things I want to highly. I am not sure what pipes are those, but the Hammer kit is very moody when it comes to pipes. The primary pipes on the video look a little long by about 2-3 inches. Long primaries are for more torque. IMO the old version of the patriot defender is the best header for the Hammer kit. Also, I didn't hear any mentioning of ignition coils or spark plugs. Consider the AEM Smart Coils and e3 sparkplugs. I run about 2 ounces of Prolong in my crankcase as well! As they say, 100 pennies make a dollar!

[@1800GREASER]

i bought the 100 hp kit with the ported throttle body from hammer for my 1200 and I ended up with 112 hp and 90 tq so i was happy, alot of times whenver i called and asked for help they would say look at the exhaust comparisons which would make or break alot of dyno runs.

[@BlockheadMoto]

Yeah we went with the 2nd best recommendation bc the Patriot Defender isn’t available anymore

[@pcontiman]

What bike did you start with

[@Forzaplayer]

Hammer Performance uses the Patriot Defender 2:1. It makes quite a difference. The part of their website comparing pipes is the most comprehensive exhaust comparison ever made. Take a look at it and you may find some lost power.

[@robinsonsmotorcycleandauto3929]

Damn I love that bike. Those injectors and more air coming in should of bumped you up quite a bit. Almost seems like it isn't able to maximize on additional fuel and Air. Still love the bike and it sounds mean as hell

[@jayden5019]

i’ve watched all your videos on how to ride and i get my license hopefully this time next year, where i’m from they don’t let me ride iron 883’s, i need a full license for that, just wondering if you think streets 500/750 are a good option for a 16 years old, either the 500 or 750 in your opinion obviously

[@MyDunnLife]

There is nothing inherently wrong with the streets 500/750. Warning if you want to mod one the parts aren’t really there. The only reason they didn’t sell well here in the states was it didn’t sound like a Harley and didn’t offer anything exciting overall. Just like Honda Grom it’s not what you ride it’s how you ride. Don’t pay a premium to get one but if the right price comes go for it. If your not doing much freeway (100kph+) 500 is fine and it will do highway 750 will do highway better.

[@TheSupy96]

Love the build and color! Not a fan of the bars but all in all is bad ass bike!

[@CactusJack252]

Time for you to do the suspension on the sporty

[@rebel_ltz]

Couple ideas: - try increasing max rpm a bit - check if the fuel pump is making the pressure it should - check if all bearings are in good condition (wheel, primary, tranny, etc) - check the clucth for slippage

[@CalebHoss37804]

Whoa. Close call. I almost bought Hammer cams. The parts needed, the install, and the tune was going to cost me $2000. But now I’m worried I won’t even get over 100 hp with it because I don’t have a performance exhaust (I’ve got Radial Sweepers and a high flow air intake) and I wouldn’t be doing nearly as much work as you did. Which is sad… cause I do want my sporty to be faster. Lol

[@BlockheadMoto]

I’ve read mixed comments, some people buy a lower hp kit and get more than expected, but a majority seem to be less than what they’re advertising with *just* their kit and what they provide with it. It’ll def make it faster though!

[@neek__7898]

"Her Two Wheels" sticker on air cleaner just for fun lol

[@patrickwmulligan2639]

i like the videos with chris in it he makes senese!!!

[@facetotheson7147]

Install a turbo with all the other goodies and see how it goes.

[@donwinburn5701]

Can't send any pics of my set up for you, sorry man. No dyno numbers though. Really not to worried about it. Things keeps up with my 800hp mustang to 100-110.. pretty impressed with it.

[@theePillar]

Dude I was suppose to class up mmi in a couple weeks in Orlando but now I can't right now due to kidney problems... I was so excited

[@bigvern8866]

Loving this build for the most part. Bought a 07 883 to put a S&S hooligan kit on. I am just not a fan of the paint on this bike, not my flavor.

[@BadAssEngineering]

A set of FOX rear shocks should make it ride very nicely

[@dancingwulf3351]

Simple fix of some power loss would be that belt try a chain like you stated 🤠

[@Horazzify]

That’s a bummer dude still looks and sounds killer tho

[@jakewilson907]

Are they hitting with NOS to getting those numbers. Other wise you should getting the same as them

[@paintslinger16]

Amazing sporty, knockout looking, do you know if the smoothing was on for the hammer Dyno runs?

[@clarkbabin9799]

Ive been a little MIA on this. But 120 hp on a sporty that thing is going to be a beast. Wait, thats your old sporty? I'm thinking you might want to put you a one up seat that'll keep you in place.

[@shishendu]

i've seen on their site, it's hidden but you can find it. the 130 plus run was with crank and rods too

[@BlockheadMoto]

Drop a link please if you’re able to find it, I’ve searched around with no luck 😅

[@beardedforlife3740]

No it's not

[@kyleryneost]

What’s crazy is these are Dyno numbers and how typically most cars and bikes are advertised is by crank power So theoretically this 1275 Sportster is producing 130bhp @7.27RPMs 103 TQ @4.12RPMs which is better numbers than the Sportster S. Most people base the pride off crank and not the Dyno.. but the sheet never lies...

[@lars-erikullsgard3320]

Obviously the sheet can Lie. Depending on the parameters 10% easy If not calibrated right.

[@dontworryaboutit1]

Most aftermarket companies advertise wheel horsepower because that's what the customer base wants to know. I haven't read their website to see if they specify though but looking at the graphs it looks like they had a different cam and better valve springs holding power out 1k rpm further.

[@BryanMoreno_]

Chain conversion and maybe gearing?

[@stevebonnesen2272]

... some years back a local shop mechanic/machinist @ HD Specialty Performance (owner deceased/shop closed)went through a number of Sportster engine's to find that with stock engine cases the biggest he could accomplish without early or premature catastrophic engine failure was 113 cu. in. ...I remember he had a 4'x4' pallet with a pretty impressive stack of blown Sportster engine cases...to clarify..they were Evo Sportster engine's...I know it was damn fast..it was a drag bike framed beast that he and his wife rode on the street...

[@BlockheadMoto]

Cool info!

[@jaketbow]

I heard you could use a thinner head gasket to get higher compression.

[@parkeslife4323]

Plus the Hammer bike is getting 96tq. That's important too.

[@BlockheadMoto]

For sure

[@renerivera3801]

Need to bump up compensator, clutch, & switch to rear chain.

[@Paul20661]

BUCK nice new sticker there XD also the Blockhead one FIDEN

[@thomasvikingcahill969]

Love watching you're vids all the way from Scotland in the uk.one day I hope to own a Harley

[@eastcoastbrushworks6327]

Please correct me if I'm wrong.... Seminole Harley is NOT the one on Rte 192 in Orlando correct? I was vacationing in Orlando/Kissimmee FL taking the family to Disney and drove past the Harley dealership. I believe it said Orlando Harley, but I could be wrong.

[@miguelsalgado4673]

Dam, that doesnt even sound like a harley-davidson anymore, it sounds like a buell out of hell

[@homeboiz19yee]

That smaller one might have been doing better from venturi effect ? Porting looked wicked nice. Would race gas give it a few hp boost?

[@oneromero6155]

Where are you getting the inverted forks? Please let us know

[@gatorsmotorcyclemisadventu4341]

Was down at seminole 2weeks ago my daughter asked if you n chris were there.the parts guy counter said never heard of ya. She was bummed. But that sporties gonna smoke some shit on the road.

[@BlockheadMoto]

They got some newbies, haha. Actually wasn’t in for a few weeks but if you’re back in the area, def swing by and ask for Chris, he’s always there! haha Shoot me an email! We’ll get some stickers you and your daughters way! [e-mail] (say I sent you from KZbin) 👍🏼

[@gatorsmotorcyclemisadventu4341]

@@BlockheadMoto hell yea i get there every few months merritt island im from

[@EiberNavarrete]

Blockhead got a question when it's in the shop like that and the bike is being tuned up does the miles it runs go on the odometer ? or only counted after it leaves the shops ? just asking a random qestio.

[@BlockheadMoto]

Yeah the Dyno miles go on the odometer

[@harleydavidsontherapy1376]

Nice!

[@bigfootgarage2201]

Y’all should see if you can shove an M8 in it, a cammed 117 or 114 would make the hp you’re looking for and you’d have a 6th gear

[@evilcaddy]

I've never ran mine on a dyno but I've done the hammer 1275 on my 883 stock gearing stock heads but ported polished 1cc over on the combustion chamber feuling reaper cams barnett scorpion clutch rsd track 2n1 rocker lockers feuling injectors feuling o2 sensors with dyno jet power vision and it is fast. I should have done the higher compression dome pistons and done a squish band on it but wasn't sure with my cams if they would hit the piston or not so I just stayed in the safe zone.

[@clif_stu]

119 hp, remember folks this is all fur "science" 😁

[@BlockheadMoto]

Yeah, science! ⚙️

[@nickhunt4532]

XB bottom end or go 88+ inches? Either that or spray it. 😎

[@petef.4688]

Rods and a compensator?

[@jsheible4564]

Hey blockhead I’ve got the hammer 1275 kit and I was wondering what kind of temp numbers you were having on say a 90 degree day? Thanks!

[@BlockheadMoto]

Temp numbers for what? Oil? I’d have to keep an eye on it

[@jsheible4564]

@@BlockheadMoto not sure what my oil is at. But I’ve had my engine temp get up to 370 on a 90 degree day. Was wondering if you’ve looked at that at all? I’m just going off of what my powervision tuner tells me.

[@ilovecarnitas]

From what I recall My heads temp run between 240-280 degrees. With Laser near the plugs

[@glenvargas4374]

@blockhead…. 2 Question here: That manifold/air cleaner. My understanding is that it sticks out further then the stock. How much further are we talking about? Second: from seeing the results here, money wise….would you say it’s safe to say that a ported HPI is worth it? Or a ported stock one based on these results when compared to the money spent.

[@beardedforlife3740]

Comparatively the hpi ported make around 3hp and 1lbft of torque over a ported factory manifold. Also to note with the hpi you can use only there air cleaner

[@davidpeterson943]

Wow that ticks me off and it's not mine. Hope ya find the solution. Bike is still sick.

[@esthesiarules]

Have you thinked to try a new fuel pump? I dont know how old our 883 was but fuel pump can often be a problem

[@reggie368]

If he doesn't like to be called "Cool !" Let's call him "Awesome !" xD

[@matthewheade9788]

Imma guess 127 hrsprs, 115? Torque

[@gilbertsantiago2921]

Hey were it’s your workshop my friend?