EVO Harley Cylinder Head Rebuild - Engine Tear Down Series - Kevin Baxter - Pro Twin Performance

Let's rebuild heads from a Harley Evolution Engine! A full tear down and diagnosis series!
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/ @kevinbaxter
Pro Twin Performance and Baxter's Garage
723 W Winder Industrial Pkwy
Winder, GA 30680
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[@briankorelec7718]

My engine is most definitely in good hands!

[@KevinBaxter]

Thanks Brian I appreciate you buddy

[@grantbaggs1111]

Thanks for the EVO coverage, Kevin!

[@intoenduro2842]

Thank you so much for these Evo vids Kevin we really appreciate it and I have learnt a lot from your channel 🙏🏁🏆

[@KevinBaxter]

My pleasure!

[@FrancescoGaeta77]

Thanks for your time @Kevin, and for the knowledge you're constantly sharing with us. I'm confident that the target of 50,000 subs will be reached by the end of the year. Take care.

[@KevinBaxter]

Thank you francesco. As of right now we are at 49,910 only 90 to go thank you for being a member

[@FrancescoGaeta77]

@@KevinBaxter I amended my typo!

[@Chevyv8man1]

Thank you very much for doing this series. The more info I get, the more i know and can put it to work for myself. Knowledge is a wonderful thing. Later

[@rebel_ltz]

Thank you for sharing with us.

[@richardboggs260]

Very good video lots of great information packed in there!!! Thank you Kevin for taking the time to make this video

[@Lanesplitter]

Keep up the great work Kevin - I really appreciate you sharing your knowledge, especially on the Evo stuff 👍

[@larrys.3992]

Much appreciated, Kevin!

[@KevinBaxter]

Thank you very much Larry I appreciate you sir

[@lesmurad8467]

Thank you for all the great knowledge you share with us.

[@Bass.Player]

We used to shim based upon installed height. No one had a spring tension gauge! Also: we also always cut the seat and valve so it would narrow the seat and place the actual contact in the right place on the seat face. A wide seat face always required more pressure to seal

[@johnsb1550]

I know who I want to rebuild my engines

[@KevinBaxter]

Thank you John I appreciate that

[@johnsb1550]

@@KevinBaxter just wish you were in the Great North Wet...I wish my cardiologist was as thorough as you are

[@brandonjones152]

All I could think of is the spring in the pound checking machine flying off . There must have been a safety rod through the center ?

[@DeBa1226]

Great stuff here, Kevin. Hey I went back and watched your Live on crankshafts and the Man O War Compensator video. I love that statement about how a guy can go buy all these top components, but they don’t always produce the performance you hope for. They have to fit with each other. How do you know? That would suck to buy an Evolution Clutch, Darkhorse compensator, add in Feuling oil pump, their cam plate, their BA air cleaner, non adjustable rods, RS 468 Cam, a Thundermax tuner and D&D Exhaust and find my bike under-performs! Lol. I’ve heard guys get recommends from their local shops and miss it at times too? How do you know your components are a great fit together? Thanks Kev!

[@thomaskirkpatrick4031]

With a 600 lift cam, has the owner done anything to up the compression?

[@thomaskirkpatrick4031]

Next time a customer asks why does it cost me anything just to have you check something out, hand them a couple of the tools you use to check things out, then tell them how much those tools cost.

[@tobpitbull]

Great video! Curious … a .600 lift cam in a 80”? What is the cubic inch of this motor? That’s seems a really big cam unless there’s been extensive head/valve work? Are valves standard size? You have me curious?

[@antbonyziemiak208]

Please tell me that you don’t use silicon-bronze valve guides. What valve guide material does Harleys use ??? Are they different for different motors ?? My 79 Triumph T-140 could only go 15,000 miles before it would need a valve job. And the local ‘talent’ machine shops would only recommend the silicon-bronze valve guides. They preformed more valve jobs with those type of guide material !!! Cast iron valve guides for me !!!

[@michaelmalone6858]

Your mean .0012" thats 12 tenthousands not 1.2"

[@toddcott9510]

Having washed a stack of your video's , They seems to justify my suspicions that Harley's are overrated unreliable and overpriced.

[@sidneysnottley6414]

Should have waaaaaaay more subs ... A channel that provides no nonsense, informative information on HD's, imparted with humour and humility is rare in the KZbin jungle. Kudo's Sir.👍🙂

[@KevinBaxter]

Thank you sir.

[@Charger1908]

If the guy has side load wear showing up and it’s obvious that he has modified this engine why is he not running roller rockers? I just did a 131 kit on my m8 and I installed roller rockers. I run them in every engine I can get them for, not necessarily for wear but also for heat. Just my thoughts, thanks!

[@KevinBaxter]

Roller rockers are nice upgrade but certainly aren't required on most Street and built engines. When you get to extreme cases high lift camshafts they become more valuable and important. And the vast majority of cases if valve stem protrusion is set proper which they were in this case roller rockers are not required

[@davidyager8817]

Thank you so much for your videos. I have a question on installing pistons and cylinders, what size piston compressor do you use on the evo motor?

[@thomaskirkpatrick4031]

I would hope after seeing what's involved with just " checking" a set of heads out, customers understand how much work is needed, and why it costs money when no actual machine work is needed.

[@patrickjoy9551]

Very well done Kevin. Gotta love that attention to detail. Thank you for sharing your wealth of knowledge.

[@davidfellows6250]

that one of the things i loved about my ol shovels. it wasn't shit to freshen them up. lap the valves, hone the cylinders, and slap a new set of rings in. I think on my 71 i did the bottom end twice ,no telling hoow many times the top changed the push rods and lifters a couple times but i put well over 1/2 a million miles on that bike. its still out there and in service.

[@waynetrainor654]

Thanks, Kevin

[@kurtruppenthal9506]

Very informative Kevin. Thank you.

[@lawrencetrapani5623]

Your knowledge and integrity are commendable! Thanks for taking the time to share your knowledge with many who appreciate your comments and professional manner! Hope your channel grows nd grows!

[@larryisreal8150]

Amazing! Informative up over and beyond! Answers to questions I never would've realized! Thank you sir!

[@b2db.fisher]

Is that the same position as the failed tappet?

[@b2db.fisher]

The damaged valve guide…

[@jeffaase3133]

Kevin thank you for the content you bring it helps me listen and truly hear my engine, trans and primary I have an 06 road king completely stock except for Reinhardt slip ons 30000 miles runs amazing I would like to put a tuner on it just to help keep all the systems operating the way they should which timer do you recommend and thank you for the channel love it

[@KevinBaxter]

Hey Jeff. Thank you sir. I'm a fan of the Power Vision because most shops know how to use them. The new PV4 has it's pros and cons at the moment. Maybe wait a few months and see how things shake out with it first.

[@mattovictimcycles1334]

Kevin when you say bead blasting do you mean glass beads....I here that can cause issues with contamination later... Is Vapor blasting a better alternative..... or am I confusing the two... Thanks for your videos enjoy them....

[@schachat01]

Thank you for the detailed explanation on the cylinder head rebuild. Not too sure if you have done a video sharing the golden porting cylinder head rules (similar to the David Vizard series) when building high performance H-D engines. Complex and very interesting subject that is often overlooked by H-D engine builders.

[@divine_swine9665]

hey kevin, i have a question... if i'm understanding you correctly, you're adding a shim underneath the coil, right? due to the constant coil compression and decompression does one have to worry about the shim "mushrooming" out after X number of miles?

[@KevinBaxter]

Great question but not at all on custom cylinder heads shimming underneath the spring due to varying valve stem protrusions and spring rates is very common and does not produce a negative result if done proper

[@qwaszxpolkmncvb]

I'd blamed adjustable pushrods .

[@jamesblack5370]

where is your shop? thanks.

[@cmonster6]

Evo is the best sounding engine hands down

[@KevinBaxter]

They do sound pretty good but I'm a fan of a shovel and a panhead too

[@Smylzncries]

Nice vid very instructive

[@TheRoadGlideRider]

Great video! 🏍💨🏍💨

[@KevinBaxter]

Thank you very much sir hope you have a great week

[@jonathanlockley9871]

Great video again Kevin. Try and get some rest, your eyes looking a little heavy.

[@KevinBaxter]

Thank you very much. Appreciate it.

[@dmitrykhramov1832]

I’m a bit late to watch this! But have to say - after all that precision of measuring, measuring time by train passing by !!! “…late night train… must be 10 pm…” That’s funny ! It just shows what is more important !!! 👌👍💪

[@joekubesch8558]

I've been wanting to see a valve video, and here it is! - great stuff. Also, with as many of us being from Ohio as it seems, you should put us in touch with one another so we can have a meetup. I'll buy the 11th round...

[@brandywell44]

When I was working in a toolroom making punches and dies for Heading Machines (bolt, screw, rivet making) we used to use lightly melted red sulphur poured into the bores (which were often a similar size to your valve stem). We would then push the solidified red sulphur out and measure that with our micrometer. It was accurate.

[@jonathanlockley9871]

Thanks Kevin. Still watching the video and learning so much about it. Like the first comment about owner riding the snot out of it. Lol

[@SmokeyLeatherhead]

Well done Mr. Baxter!

[@KevinBaxter]

Thank you

[@jonathanlockley9871]

Remember when a train horn blows, it’s time to go home.

[@danielnichols9049]

I currently own a twin cam 103 but may be buying a 1998 Evo. This could be helpful!

[@KevinBaxter]

Evos are great engines if you're getting it at a good price you can't go wrong

[@JonV-r7q]

Great Video Kevin. Learning...

[@KevinBaxter]

Thank you Jay I appreciate it

[@michaelmalone6858]

Your forgetting rocker arm ratio on valves spring measurement

[@KevinBaxter]

How so?

[@michaelmalone6858]

@@KevinBaxter If you have .500" lift at the cam lobe you must multiply that by the rocker ratio to get total valve lift.

[@KevinBaxter]

I don't have .500 lift at cam lobe..... I have .600 lift at valve. In the video I stated ".600 lift at cam" then corrected myself saying .600 lift at valve. The bike is running a stock rocker ratio of 1.625:1