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View Full Version : gotta question about valve heights


rxracer
08-19-2008, 08:40 AM
http://home.comcast.net/~seekproj/valves2.jpg

does something seem really odd about how 2 of the valves seem shorter than the other 6?
Saleen91
08-19-2008, 10:04 AM
definitely!
gt350mustang
08-19-2008, 10:42 AM
It could be an optical illusion, but the valves look to be the same. It appears the position of the lock is farther down on two of them.
Timebomb
08-19-2008, 11:10 AM
They also could be different valves that have the groove for the retainer lock lower than the others. If the height of the spring is checked and set up correctly by adding or removing shims or maching the head to obtain the proper spring height I don't see it as being a huge issue as long as the valve is the same length.
gt350mustang
08-19-2008, 11:33 AM
BTW, new project?
White90GT
08-19-2008, 02:51 PM
What are you fiddling with now? I thought you got rid of all the old dodge heads.
red95gts
08-19-2008, 11:10 PM
Looks to me like the valves are all the same height, but the retainers sit lower on some
Chad82GT
08-20-2008, 02:38 PM
What are you fiddling with now? I thought you got rid of all the old dodge heads.

Those look like pedistal mount SBF heads to me.

Agreed with what the others said... valves are all the same length but the retainer sits lower on some. Someone may have mix/matched different year valves on that head. They're probably not worth the work/parts to fix unless you know someone with stock valves laying around they'll give you. Here's what I'd do if those were broight in:

1) Disassemble
2) Clean / magnaflux
3) Inspect valves
4) Measure insalled height on all valves
5) Measure spring tension at installed height
6) Replace oddball valves and/or springs as needed
7) Inspect seats for pitting/wear
8) If none, hand lap valves to head
9) If minor pitting, "bump" the seat with a stone
10) If larger pitting, scrap heads because they're not worth putting seats in
11) Clean
12) Reassemble with new seals

That's $220 + parts. Add $125 if they need guide inserts. Of course it's a lot less if you DIY :thumbsup:
rxracer
08-20-2008, 07:46 PM
they're not my heads. member on another board posted this pic, and i knew someone here would have the answer(or a good idea). thanks dudes.