PORTED M90 BLOWER TEST-HOW MUCH POWER IS PORTING REALLY WORTH? CAN THE JUNKYARD M90 MAKE 650 HP?

[@Emilthehun]

Long time ago an old guy at the track told me that more boost is just more heat. Richard is like the teacher we all wish we had in hs! It still amazing to me that this much knowledge is free on the internet.

[@Matp345]

Standing next to basically a runaway is boss

[@madmod]

I went through my garage and I have no less than 3 m90 blowers from my ssei days. My stock gen 3, my ported gen 3 from a junkyard gtp, and a gen v blower from a 05 series 3 gtp. The memories of grenading those transaxles came with it. 🤘

[@kirbyswarp]

When did they blow up? Just driving, or when doing a pull? I'm modifying my GTP at the moment.

[@madmod]

@@kirbyswarp Alot of them failed in winter and would start with soft slips before just refusing to go into first. I had one let go during a wide open throttle 1-2 shift. it straight up grenaded.

[@madmod]

@@kirbyswarp I've seen a Saab 5 speed swap into a gtp. Seems a much more stout unit and being manual is tons of fun

[@hellbringer09]

@@madmod yea the saab swap is fairly common. the g6 6 speeds i hear fit nice and hold some power aswell...another saab part i believe.

[@madmod]

@@hellbringer09 I've heard of people using K series 6 speed fwd gearboxes too but don't know who makes the swap parts

[@rocketsurgeon11]

Cool, cool...bring back the GLH and the 2.2!!! Really want to see how that Vizard head does and all.

[@larryw5429]

M90 on a stock 4.3 vortec test if you do the 4.3! Maybe a company could build a intake set up if it shows promise!

[@MrStinkeyWinkey]

Budget 500 hp v6!! Put in a old g body make a poor man's gnx

[@aliciaANDanthonySandoval]

Please m90 the 4.3l

[@richardholdener1727]

IKR on the 4.3L

[@crash5811]

And even the new DI 4.3l. Id b curious to swap that into my vortec s10. Still a 4.3 like the badge says.... 😂

[@jeffallen6937]

M90 in a s10 platform would make a nice vidoe.

[@Grooty79]

Love the m90 tests 🙂 good to see such a small blower make such big gains on a healthy 5.3

[@charlesweber4925]

I'd like to see an Atlas 5 cylinder with a M90...or 112... any Atlas motor really....

[@TidleyWink64]

i had one of these M90's bolted up to a toyota 22r Hybrid motor with lowered compression and a 600 double pumper holley on top... she was fire breather

[@richardholdener1727]

very cool

[@davenava6886]

Hows the supercharger working with the carburetor on top, is the gas wiping the rotors and bearings. I'm thinking about doing the same

[@jeremymann8930]

I'd like to see this on a 3800 and compare it to a non-ported genV to see how much gain there is. And how the 3800 responds.

[@WildEngineering]

I love that you do wild stuff like running without the TB! keep up the good stuff :)

[@MADDMERK]

Good thing Richard trust the Ls engine standing next to it on the dyno 😎🔥👀

[@richardholdener1727]

it was sketchy

[@ChurchAutoTest]

Just did a test on an LT4 Camaro ZL1 last week. Same tank of fuel, same pulleys, same tune, just swapped stock 2650 blower for a Kong-ported 2650. Picked up 70 hp up top. gained from 4000 rpm onward. Did lose some torque below 3000 rpm though. This was on a 427, really good cam and heads, making 4 figure hp.

[@richardholdener1727]

do you think the port timing changed with the porting to show the losses down low

[@ChurchAutoTest]

@@richardholdener1727 I think it had to have. It's got a lot more entry area so at low speeds with less air velocity it just isn't filling the rotor space as well. And air velocity probably got even worse by opening it up. TBH I'm not sure I'd do it for a manual car. But for an auto trans with the right setup (this was on a 10AT ZL1) it's all positive.

[@garagecedric]

The loss low down is probably due to the rotor exit porting. I remember a presentation that Volvo did on an engine conference i was at, where they did play around with that area to taylor the superchargers efficiency characteristics for their twin charge application.

[@Guns_N_Gears]

Saw a crank getting drilled earlier on Mortske repairs channel. Must be blower day!!!👍👍

[@keatonfrancisco6763]

That's interesting bc you use a sc to get power and torque down low. So porting is a good way to move the power band further up the rpms

[@moabman6803]

I'm guessing it lost power down low because jokers ported the outlet. In either case, this is one of my favorite videos you've ever done Richard.

[@bcbloc02]

Would be interesting to know if the intake temp was running more at the lower rpm after it was ported. Maybe it needs a stepped throttle opening to control the blower. 🙂

[@lt1z350]

Blower needs more rpm now. Help recover that boost loss down lower rpm. Peak will also climb as long as heat doesn’t run away. Cooling always key on these pd blower combos. Crazy that kind of gain on such a tiny blower

[@richardholdener1727]

we had over 20K blower speed already

[@RobsNeighbor]

Thank you for the constant Data!

[@SnappingTurtle444]

🖤 Thanks Rich 🏎🐢💯

[@lapin46]

typical for ported roots type of compressors. Widening the exit port changes timing akin to a 2stroke engine shifting the pump efficiency range towards higher rpm.

[@Levibetz]

Okay so now what if you ran TWO ported Jokerz blowers on the 5.3 haha. Incredible stuff though, a cheap junkyard blower is cranking out almost hellcat power on the engine dyno and beating an LSA! From dealing with inline pumps on carb tanks for efi and porting some oil pumps I've learned pumps absolutely HATE inlet restriction, so if the inlet is even a bit small there could be big gains available.

[@greenbassboosts8872]

In stock m90 the casting is super rough and there's probably a lip right after the throttle body. I think I can be improved a lot just smoothing I all oit

[@JDWard-Jeepster]

Surprised how easy that pulley drilled. I have cut down pulleys before on the lathe and had to use carbide because of how hard they were.

[@richardholdener1727]

Neither the pulley nor the crank are very tough

[@Marc_Wolfe]

I highschool, we made pneumatic engines. Mine ran on about 5 psi. Good tollerances and what not. Other kids sloppy nonsense would spin insanely fast. I realized how, and ported mine; now mine went even faster than his; but the low speed efficiency was gone. I'm sure the same would be observed using it as a compressor; and I'm sure there's something comparable to aggressive cams in both cases.

[@omerqawi9096]

Can you do a 3.8 Ford V6 out of the older mustangs?

[@aliciaANDanthonySandoval]

M90 4.3l, please, and I'll buy the custom intake manifold(with fuel rails)for it on $20 a week payment plan...

[@THESMARTERMAN555]

I guess if hood clearance is not a problem, bolting on 120 ft lbs of torque and 100 hp for $500 is not bad. The M90 is bit small for such a large engine, but it is much safer to run such low boost, would be great for a DIY person.

[@richardholdener1727]

The blower doesn't know engine displacement-just flow and power

[@jessealbright8593]

I'm impressed

[@andrewinsinga2993]

Now put a 112 blower on it!

[@bens8696]

My guess is more blower blow by at low rpm due to decreased surface area in blower housing

[@DrSkrungle]

Have you considered testing a ported and polished chinese turbo housing vs unmodified? I heard they choke potential in stock form

[@richardholdener1727]

The turbo size dictates the power potential-porting would only help a little

[@madmod]

Now you need a bigger crank pulley. More blower speed! More powa!!

[@richardholdener1727]

WE ARE OVER 20k RPM NOW

[@madmod]

@@richardholdener1727 holy crap!

[@crash5811]

BIG BANG BLOWER test!

[@renndub]

What about air density? Which way delivers more cool dense air?

[@richardholdener1727]

which way?

[@matthewf1979]

I wonder how the M90 would do on something like a K20/24 or a Subaru N/A FA20/24.

[@jafinjohn7367]

I run it in my miata. 1.8

[@ChurchAutoTest]

Well the M62 blowers on ethanol with a plate intercooler easily crack 400 whp. So with 50% more blower...

[@rkstuntz5278]

hej richard, i want to place a ported m90 blower on my 2.0l 20v turbo volkswagen. the car have a borgwarner efr7163 t4 twinscoroll 0.80ar turbo that can do 60lbs/min and make 530hp. do you think that it going to work when i make the air intake/filter on the blower inlet and the exit of the blower into the inlet of the turbo with a watertoair intercooler in between. so i mean without valve to switch over to only turbo. is the supercharger powerfull enough to feed the turbo to its limit of 60lbs/min? max impeller speed go to 17500rpm (7400 engine rpm)

[@richardholdener1727]

if your efr turbo will support 60 lbs/min-it should make 600 flywheel hp. The blower will be in the way and raise pressure dramatically-though it will help spool

[@rkstuntz5278]

@@richardholdener1727 thanks for youre fast response. then i go try to make a big throtle bodie in front of the turbo air intake that opens when the supercharger did the job down low in rpm.

[@PrezziePrez0]

I am a noob and extremely lacking of knowledge with this kinda stuff. Can anyone inform me of the benefit of having drilled that hole and inserting that pin where it is please. Thank you

[@richardholdener1727]

to stop the damper from spinning on the crank-they must spin together to drive the blower

[@PrezziePrez0]

@@richardholdener1727 ohhhh ok I get it now it locks them both together to rotate at the same rate. Thank you for replying to me very much appreciated have a good day

[@daytradescottie7253]

Blower looks comically small. Who will come up with a way to mount two in a row - one behind the other? Huge single throttle body on top of Inverted Y shaped inlet elbow, jack shaft with pulley on each end...

[@E1337Jerk]

Drop that bad boy in your Z

[@3800S1]

Wait? I'm a bit confused, does the LS not have a keyed crank?

[@richardholdener1727]

it does not

[@3800S1]

@@richardholdener1727 That seems odd to me, learn something new everyday.

[@VariousVices]

Why not run 2 M90s? I saw a twin setup on a firebird once upon a time... One M90 is gonna make too much heat to be worth a damn on a V8 at Rpm. 2 mite be worth it

[@richardholdener1727]

We made 650 hp with 1 ported M90 and the charge temp was only 85 degrees at 7200 rpm

[@VariousVices]

@@richardholdener1727 that is seriously impressive. Not just the HP numbers but the IATS..... The Fiero crowd loved the 3800sc and I've owned an bunch of them. Most ditched the M90 and went turbo for anything above say 500hp due to the lack decent charge cooling that would clear the deck lid. Without water/meth M90s would heat soak and start to knock and kill timing with aftermarket pullies and higher boost on the 3800. You'd really have to spin that thing to get boost on a bigger CI engine. I still think two m90s would be the way to go on a V8; especially one as potent as an LS that have heads that flow stock.

[@michaelblacktree]

Nice! 👍

[@chrishoward5500]

So what does everyone think this would do on a 6.0 with 706 heads?

[@richardholdener1727]

does your 6.0L make more than 550 na HP?

[@chrishoward5500]

@@richardholdener1727 i hope so😅 and i’m guessing you’re gonna say it’ll limit around the same hp

[@michaelrodgers6559]

It wants a smaller pulley.

[@richardholdener1727]

it's already over 20K rpm

[@michaelrodgers6559]

@richardholdener1727 what's its efficiency range? Or is it getting close to its mechanical limits?

[@basedsigma5634]

What a load of bs😂😂😂 Boost pressure vs air flow statement....

[@richardholdener1727]

Don't worry-you will get there

[@IndependenceIron]

Custom intake with twin M90s, one for each bank and crack 1200...haha impractical but would be a cool build none the less. Love the content here!!

[@sixx6sixx107]

With the little boost that they add you probably would have to add an injector or 2 spraying M1 just to keep them cool well under 1k hp

[@madmod]

Aston Martin used two m90s on one of their sports cars

[@254967conwell]

You would be just spinning your wheels with stock heads. Any Heads can only take so much air

[@302hobronco]

Didn't that junkyarddog guy start a twin m90 supercharged 302 mustang build years ago? Whatever happened to him?

[@madmod]

@@302hobronco i think he's still working on it

[@bash5552]

4:00 how long did you say the belt needed to be? Yes.

[@richardholdener1727]

I ran the belt for the dyno testing without using the alt or PS-you would want a different belt length than I used in a vehicle

[@GarageItYourself]

It'll all be to do with air velocities won't it? By porting the blower you remove material and make the port large. If too much bigger this will reduce air velocity but not flow. Hence the lower velocity in the lower rev range will show as a dip in torque.

[@deltafire5058]

A great man once said: "Do not, my friends, become addicted to boost. It will take hold of you, and you will resent its absence!" - Immortal Joe

[@Mark-Willis]

20k rpm M90 on a 302 with gt40 heads and any alphabet cam. Help us Richard Holdener, you are our only hope.

[@richardholdener1727]

very high boost and much less power

[@Mark-Willis]

@@richardholdener1727 of course!

[@danielcarroll5667]

I think the horsepower gain is very impressive but the torque really blows my mind ! 120+ gain from 3500rpm up .

[@Kstang09]

M90 all the motors! Vroom vroom 😎

[@keithsmith9889]

650 is pretty impressive considering i honestly didn't think it make it to the 500 mark

[@ForneyRider]

So what you are saying is the svo (m112) can also be ported and I should never have sold my laser red 98 GT.

[@richardholdener1727]

any blower can be ported

[@devionfunderburk3531]

Richard how much power do you think i would lose my using a low ram base instead of high ram

[@richardholdener1727]

see the hi ram vs low ram video

[@2ndsspz]

M90 is barely sufficient for a 3,8L

[@2ndsspz]

I do appreciate your test efforts. Keep it up!

[@richardholdener1727]

we made 650 hp, so it's more than sufficient

[@pauljohnson7may]

Could you give the blower/engine drive ratio when doing these tests as it would be interesting to see just how fast the blower is spinning. A similar test with an M112 would be great too.

[@richardholdener1727]

over 20K rpm on this one

[@3800S1]

I'd say the blower after porting has lost some displacement to gain higher speed efficiency (air throughput). Probably where material was removed around the rotor closing/opening points within the housing and that changed their locations slightly decreasing displacement.

[@Supercharged287SOHC]

Porting a blower will not increase or decrease displacement, it just makes it more efficient, it lost the low end grunt because is throwing less boost

[@BOOT]

Interesting testing as always!

[@tylercarlson1659]

Interested to see what a 10/71 Blower on stock motor would make for hp, with ring gap added of course

[@richardholdener1727]

I have a 6/71 blower on a 383 ls vid up

[@tylercarlson1659]

Great vids Richard! Was thinking more like a K24 honda motor with a 10/71. Boost at idle at 10 psi at 2500 rpm. How much air gets bypassed vs injected into the motor and how long will the motor last "BIG BANG" style

[@daviddavis1322]

That is an overwhelming amount of effort/stuff to make 100hp. it's ~20%, but now you got that intercooler and a modified OEM blower. So you've got extra fluid leaks plus more spinning stuff. Seems like a pass for this size of engine. Doubling up on them might work, but seems like a way to destroy time compared to a 7875 VS turbo.

[@richardholdener1727]

YOU MISSED THE POINT OF THE EXERCISE

[@TEAMWRIGHTEOUS]

I know it's probably one of the multitude of pulls you made, but it looks like at 5:20 you have too much timing up top as it's puffing out the exhaust from detonation....

[@richardholdener1727]

there is no detonation-the junkyard motor has 200K miles and now near 600 dyno pulls with several hundred above 7500 rpm.

[@TEAMWRIGHTEOUS]

@@richardholdener1727 gotcha... Yeah I just figured it may have been a video from one of the times you made a pull and turned the timing up like 1 degree too much in that one spot. Usually for me, that was the sign I was pushing the limits a bit too much and would back it back down.

[@bosshoggett]

What sort of money does it cost to buy an M90 in n American wrecking yard? Wonder if i can find one that will post to Australia?

[@richardholdener1727]

$100 OR LESS USUALLY

[@fppro1679]

It would be fun to see if you turbocharged that motor if it would be more power than the supercharger.

[@richardholdener1727]

turbo would make a lot more-see the vids where I compare blowers to turbos

[@maxomalo]

I'd really be interested to see how the m90 does on a stock lh6 or l33. Stock bottom end, stock 799 heads or 706s. Something most guys can find or afford.

[@richardholdener1727]

its going on my LM7

[@trentm7964]

Super turbo it now.

[@richardholdener1727]

THAT VIDEO IS ALREADY UP ON THE 3800

[@tempestnz1]

Cant hear it ya weirdo

[@russtynuts]

Torque storm vs the super richey m90

[@richardholdener1727]

TS wins for peak power