Thread: 03 xlh 88"
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Old 24th October 2018
jkinkade jkinkade is offline
Chief Harley Engineer
 
Join Date: Jan 2016
Location: on the Australian east coast
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Quote:
Originally Posted by splineman View Post
I bought a set of machined heads from Hammer...with the crush head porting service 1.9" intake 1.615" exhaust valves.
https://www.1250kits.com/xlporting.shtml#Crush
10.5 compression, 205 lb cranking pressure best I can check.
It's strong no doubt about that!

Cheers.

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sound's great!!
Aron told me the 560 impact need 10.5 so thats what we set up my motor at, I run close to 1.9 intake but it's not quite that size & stock size exhaust valves late style heads. & hammer billet manifold for se cv44 but carb a bobby wood Rebel cv43.5 = a SE CV44 with a 43.5 Venturi , I've used it on three different Harleys & my M2 carb Buell. I like it as every time you open throttle up it pull no hesitation & under load. just have to check AFR under load on my friends DJ 250i I have plenty of jets as it uses Holley main jets.
just have to see what AFR at low rev & high rev under load looks like.
but it felt beautiful on all my other Harley's I have used it on. & the Buell, strange as I had it on a strong runing Twin Cam 95" dyna & bolted it with a s&s sporty G manifold plus made adaptor & it worked perfect on the 1200 Buell thunderstorm ( just had piston hight in bore adjusted ) d&d Buell system
100,000 km up.
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2003 XL 88"
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