Here's what I got
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Cruiser
Joined: Sep 2013
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From: CNY
Here's what I got(Ratail rebuild)
Tore down the Ratail today to find a HQ-24 cam and 2 bad lifters (rollers are shot) I alresdy have a S&S super E , Thunderheader , S/E non adj. ignition , stock pistons and heads .
The main reason for this rebuild is front cyl had 122 psi and rear had 139 psi and was burning a qt. of oil every 250 - 300 miles .
Here,s the plan cylinders and heads going to machine shop on sun. (found out the guy i'm using is one of the top h/p makers in the country ) good for me . gonna bump comp. up to 9.5 or 10 :1 looking for external adj. ignition system and keeping the HQ-24. also gonna get a set of Johnson high lift lifters, a S&S steel breather and smooth out the head ports and intake.
Hopeing all this will bump me up well over 80 h/p wich would be great for the 6 spd o/d trans i,m also adding this year.
The main reason for this rebuild is front cyl had 122 psi and rear had 139 psi and was burning a qt. of oil every 250 - 300 miles .
Here,s the plan cylinders and heads going to machine shop on sun. (found out the guy i'm using is one of the top h/p makers in the country ) good for me . gonna bump comp. up to 9.5 or 10 :1 looking for external adj. ignition system and keeping the HQ-24. also gonna get a set of Johnson high lift lifters, a S&S steel breather and smooth out the head ports and intake.
Hopeing all this will bump me up well over 80 h/p wich would be great for the 6 spd o/d trans i,m also adding this year.
Last edited by highbarst; Dec 1, 2013 at 08:37 PM.
Elite HDF Member
Joined: Jul 2010
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From: Lorain Ohio
Sounds like a nice build. I thought some in here said to stay away from the steel breather gear. If there's a problem in there better to have the plastic breather take the abuse then have a metal gear start shredding stuff.
Road Warrior
Joined: Jul 2013
Posts: 1,476
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From: Florida
Good luck with the build, op. Should be a solid motor when done.
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Cruiser
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From: CNY
Can already see scoring in the case from the breather my thoughts were metal embeds itself into the rotating plastic gear and chews up the aluminum case . I would rather the metal embed into the case and chew into the breather . $100 breather is better than removing eng. and splitting cases to have it machined out .
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From: la la land jerzey
contray to what has been said /// The plastic breather gear is an issue with wrecking the breather hole - the 1935 VLV 74 inch Police bikethat is attached to my shop and it still has its original breather gear and the bike was in police service 5 years when new, today its driven every chance we get -- they also make a reed breather you might want to look at as high comoression will have lots of blow by and will need it
I own a shop and have been doing this 2 weeks now and in my opinion on lifter rollers going bad is the valve springs, the harmonics created by flat double springs causes a bounce at high engine speed and that in turn causes lifter rollers to fail - LOOK at the cam for damage ( dents - pits - or discoloration on the nose ) i would use a conical ( bee hive ) valve spring we have hunderds of flat springs in a milk crate box in the shop take outs --
i would re think the 10 to 1 i would look at 9 to 1 your cam has a short 236 intake duration and its LSA is 107 you wont be able to stop it from pinging if you have quiet mufflers < drag pipes Well you wont hear a 747 landing on top of you -- johnjzjz
I own a shop and have been doing this 2 weeks now and in my opinion on lifter rollers going bad is the valve springs, the harmonics created by flat double springs causes a bounce at high engine speed and that in turn causes lifter rollers to fail - LOOK at the cam for damage ( dents - pits - or discoloration on the nose ) i would use a conical ( bee hive ) valve spring we have hunderds of flat springs in a milk crate box in the shop take outs --
i would re think the 10 to 1 i would look at 9 to 1 your cam has a short 236 intake duration and its LSA is 107 you wont be able to stop it from pinging if you have quiet mufflers < drag pipes Well you wont hear a 747 landing on top of you -- johnjzjz
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From: Florida
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Cruiser
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From: CNY
Funny it would only smoke when first started and boy would it smoke but after a few miles it would stop and other than valve train noise could only hear the sweet sound of the thunderheader
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Thread Starter
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Cruiser
Joined: Sep 2013
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From: CNY
contray to what has been said /// The plastic breather gear is an issue with wrecking the breather hole - the 1935 VLV 74 inch Police bikethat is attached to my shop and it still has its original breather gear and the bike was in police service 5 years when new, today its driven every chance we get -- they also make a reed breather you might want to look at as high comoression will have lots of blow by and will need it
I own a shop and have been doing this 2 weeks now and in my opinion on lifter rollers going bad is the valve springs, the harmonics created by flat double springs causes a bounce at high engine speed and that in turn causes lifter rollers to fail - LOOK at the cam for damage ( dents - pits - or discoloration on the nose ) i would use a conical ( bee hive ) valve spring we have hunderds of flat springs in a milk crate box in the shop take outs --
i would re think the 10 to 1 i would look at 9 to 1 your cam has a short 236 intake duration and its LSA is 107 you wont be able to stop it from pinging if you have quiet mufflers < drag pipes Well you wont hear a 747 landing on top of you -- johnjzjz
I own a shop and have been doing this 2 weeks now and in my opinion on lifter rollers going bad is the valve springs, the harmonics created by flat double springs causes a bounce at high engine speed and that in turn causes lifter rollers to fail - LOOK at the cam for damage ( dents - pits - or discoloration on the nose ) i would use a conical ( bee hive ) valve spring we have hunderds of flat springs in a milk crate box in the shop take outs --
i would re think the 10 to 1 i would look at 9 to 1 your cam has a short 236 intake duration and its LSA is 107 you wont be able to stop it from pinging if you have quiet mufflers < drag pipes Well you wont hear a 747 landing on top of you -- johnjzjz
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From: la la land jerzey
ask him about the bee hive spring verses the flat springs as a performance adder