97 C5 back on the road after valve spring replacement
12-31-2004, 10:59 AM
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97 C5 back on the road after valve spring replacement Some of you may remember my broken valve spring of late October:
https://ls1tech.com/forums/showthrea...08#post2009008
Finally got some free time and replaced them starting with #6 in the pictures below. Also did valve seals as I put on PP's spring seats.
Thanks to the good old LISLE valve spring compressor/cyl. Air pressure line they are done without issue!
Seems to run fine, after a heat cycle we took it out for a spin, runs stronger than ever.
A few things I noticed different between the Pioneer & PP Gold springs:
Pioneer spring uses 3/16 dia. outer wire and near 1/8" inner and both seat & retainer are a slight interference fit on the spring
PP Gold uses 5/32 dia. outer wire and right at 1/8" inner, is 3/16 taller and has a looser fit for both the seat and retainer
I like that loser fit better as I noticed some galling on the Pioneer spring seats & retainers.
Funny thing .both double springs weigh exactly 3 Ό oz each!
Time will tell but all should be well.
https://ls1tech.com/forums/showthrea...08#post2009008
Finally got some free time and replaced them starting with #6 in the pictures below. Also did valve seals as I put on PP's spring seats.
Thanks to the good old LISLE valve spring compressor/cyl. Air pressure line they are done without issue!
Seems to run fine, after a heat cycle we took it out for a spin, runs stronger than ever.
A few things I noticed different between the Pioneer & PP Gold springs:
Pioneer spring uses 3/16 dia. outer wire and near 1/8" inner and both seat & retainer are a slight interference fit on the spring
PP Gold uses 5/32 dia. outer wire and right at 1/8" inner, is 3/16 taller and has a looser fit for both the seat and retainer
I like that loser fit better as I noticed some galling on the Pioneer spring seats & retainers.
Funny thing .both double springs weigh exactly 3 Ό oz each!
Time will tell but all should be well.
12-31-2004, 12:58 PM
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Originally Posted by VINCE
Good job... How did you know your spring was broke? Many things cause a rough idle. Now if your idle is smooth as stock and then your car idles like a dragster I can understand, but that other post did not say that.
No codes were showing (you don't always get any codes.....) so that means mechanical breakage and the way it was driving on 7 cylinders it was my first educated SWAG.
12-31-2004, 03:14 PM
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Originally Posted by allthrottle&nobottle
Well my other post said injector or spring......and I have been around broken stuff including springs before!
No codes were showing (you don't always get any codes.....) so that means mechanical breakage and the way it was driving on 7 cylinders it was my first educated SWAG.
No codes were showing (you don't always get any codes.....) so that means mechanical breakage and the way it was driving on 7 cylinders it was my first educated SWAG.
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01-01-2005, 11:01 AM
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Originally Posted by VINCE
Sounds like 99% of big cam'd cars or big cam'd strokers to me. 
