Beatbox valve springs for 259e?
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Stellar HDF Member
Joined: Feb 2016
Posts: 2,066
Likes: 259
From: Northstreet, michigan
Upgrade valve springs for 259e?
Lol title is supposed to say “upgrade”, not beatbox
For those who are more knowledgeable than myself in regards to valvetrain, I’m curious what the best valve springs would be for 259e cams? I believe max lift is .579. I don’t want to end up causing additional wear but don’t exactly trust the stockers either. I’m also looking to do guides/valves/etc while I have the heads off. It’s worth mentioning that I do beat the hell out of the bike....
17 lrs with screaming eagle 117 kit, fat cat exhaust, and dyno tuned with pv. 107/122 hp/tq. Also upgraded lifters to s&s premium w/o travel limiters, and se adjustable pushrods.
Thank you.
For those who are more knowledgeable than myself in regards to valvetrain, I’m curious what the best valve springs would be for 259e cams? I believe max lift is .579. I don’t want to end up causing additional wear but don’t exactly trust the stockers either. I’m also looking to do guides/valves/etc while I have the heads off. It’s worth mentioning that I do beat the hell out of the bike....
17 lrs with screaming eagle 117 kit, fat cat exhaust, and dyno tuned with pv. 107/122 hp/tq. Also upgraded lifters to s&s premium w/o travel limiters, and se adjustable pushrods.
Thank you.
Last edited by Nickd2689; Mar 28, 2019 at 06:19 AM. Reason: Autocorrect
Thread Starter
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Stellar HDF Member
Joined: Feb 2016
Posts: 2,066
Likes: 259
From: Northstreet, michigan
Thank you. Are av&v springs the ones that Harley and s&s (an many others) sell as their own? Would you go with slightly stiffer springs for a 259e cam or just replacements? I know stiffer springs can increase wear but I’m going in circles reading about whether or not I should go with stiffer springs. I do tend to ride higher in the rpm range.
HDF Community Team
Joined: Jun 2006
Posts: 12,779
Likes: 2,609
From: san antonio
The OEM beehive springs will accommodate the lift and, IIRC, those are AV&V springs with a seat pressure of 140psi. Nothing wrong with those springs for most street applications. The SE Performance catalog will recommend the SE "race" springs designed to operate properly up to 7000rpms but unless the motor will see that rpm range, the race springs are overkill and will contribute to valve train noise. If a bit more than stock spring pressure is desired, shims are available. JMHO.
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