Rocker arm rubbing valve spring cap
Thread Starter
On The Tree
Joined: May 2011
Posts: 129
Likes: 0
From: Lake County Ca
Were these heads worked? If you have then the rocker may have been sunk farther into the seat and the valve tip becomes higher. The rocker tip is also far to the intake side of the valve stem closed.
As others have stated, you need to take a bunch of measurements to figure out the exact problem and go from there.
What is the setup?
As others have stated, you need to take a bunch of measurements to figure out the exact problem and go from there.
What is the setup?
I have a brute speed blower cam the specs on that are "dur @.050 232int/240exh lift .595int .608exh lsa 115"
comp 7955-16 pushrods 7.40"
comp 26926-16ts valve spring kit came with springs,retainers,valve locks,valve seals, and spring seals
stock rockers
comp 3153kt timing chain
heads and everything else stock as far as i know.
also im going to order the micrometer and start measuring everything asap
The micrometer will answer a lot of questions. Are all the seals smashed or only the one? Do you have the Comp trunnion kit? There are a couple of guys who had the trunnion kit bearings fail (one thread was very recent within the last week or so). You may want to examine that rocker more closely or possibly disassemble it if you have the trunnion kit to make sure all is OK. If the bearings start to wear abnormally it will change the rocker position relative to the valve stem.
Thread Starter
On The Tree
Joined: May 2011
Posts: 129
Likes: 0
From: Lake County Ca
The first two springs that I pulled the seals were smashed, ran out of time and stopped there. Yes I forgot to mention I do have the trunion kit as well. Ill disassemble the trunnion today and get a better look at it. and im also ordering the micrometer hopefully I'll have it by Tuesday at the latest
Thread Starter
On The Tree
Joined: May 2011
Posts: 129
Likes: 0
From: Lake County Ca
Can you post up more pictures of the retainer/locks. the fitment does look wrong. From what I can tell in your photos, the locks are too far in and there seems to be a gap all the way around the top of the lock. You may have super 7 retainers with the stock style 7 degree locks.
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On The Tree
Joined: May 2011
Posts: 129
Likes: 0
From: Lake County Ca
I was finally able to measure the first two install heights and they are right around what the install height is supposed to be
around 8.35
this one was closer to 8.36
and heres another pic of the retainers/locks.
does anything look not right from the pics?
around 8.35
this one was closer to 8.36
and heres another pic of the retainers/locks.
does anything look not right from the pics?
Thread Starter
On The Tree
Joined: May 2011
Posts: 129
Likes: 0
From: Lake County Ca
they do look a lot different then yours though.
I asked Bob at brute speed and he sent me a link from comp it says 1.835 install height is 1.8 a lot more common? I just have the seat and no spacers under it
What is the diameter of the springs and retainers you have as this looks like a 1.400" Spring and that will not work in several ways
If you had this installed they could have shimmed them up to the right installed height for the springs as the retainers can have a +.100 installed height and that will cause clerance issues with the rockers
If you have a part number on the retainers only,that would help identify and eliminate some possibilitys
If you had this installed they could have shimmed them up to the right installed height for the springs as the retainers can have a +.100 installed height and that will cause clerance issues with the rockers
If you have a part number on the retainers only,that would help identify and eliminate some possibilitys
The 1.835" is what Comp Cam recommends for the seat height with the 26926-16TI-KIT. So the seat height isn't the issue with those springs.
Yes the retainers are to high, but why...?
Yes the retainers are to high, but why...?
Thread Starter
On The Tree
Joined: May 2011
Posts: 129
Likes: 0
From: Lake County Ca
I talked to comp cams yesterday they said there shouldn't be any issues with the setup. Do the retainers look like the wrong ones? I bought everything brand new together maybe something was packaged wrong?
TECH Fanatic
Joined: Sep 2005
Posts: 1,584
Likes: 23
From: NYC
The valve locks look okay, but it looks like someone ground down the valve stem tips or somehow used a shorter valve. Look at this Mast head and pay close attention to the valve tips and their height.
Last edited by Jontall; Aug 24, 2014 at 01:13 PM.