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Author: Subject: Valvespring & Shim/Shimless Question
josephflynn007
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[*] posted on 28-3-2017 at 01:58 PM
Valvespring & Shim/Shimless Question


I have read through this thread

http://board.tercelonline.com/viewthread.php?tid=53350

But the part mentioning shimless buckets that will work with our valvespring setup I would like some more information on.

How do we know the correct shimless bucket to order and how would lash be set? Will it be a matter of no lash needing to be set (new one to me) or is there a manner of adjustment?

I'm wanting to continue using my 5efe dis. stock springs in my turbo setup since I'll be using stock cams and stock rpm limiting, but in other engines I usually have to at least upgrade the valvespring in N/A applications for boost and/or higher rpm setups.

Any input anyone?




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1995 Tercel - 4efte powered, 132 whp @ 8psi, 13.90 @ 98.26 mph ---RIP "Most Loved & Hated"

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titaniumADRIAN
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[*] posted on 29-3-2017 at 11:53 PM


valve clearance (cold) should be about .2 mm on the intake and .35 mm on the exhaust. if you want to convert to shimless buckets, just add your current valve clearance and your shim+bucket combo(do this for each valve). then subtract the amount of clearance you would like to run and order the corresponding shimless bucket.

but really this is not needed if your clearances are in spec the cam will never spit out a shim at the stock limiter , just run 1st gen 5e valve springs they are better than the DIS springs.
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mjc79
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[*] posted on 16-7-2017 at 01:53 PM


Quote: Originally posted by titaniumADRIAN  
1st gen 5e valve springs they are better than the DIS springs.


Where might be a good place to source new 1st gen stock replacement springs? All im finding is the high dollar aftermarket ones :dunno: I also read that the stock 4age 16v springs fit, but does it matter what year or model they are for?





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Malibuguy
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[*] posted on 17-7-2017 at 07:57 AM


I wonder if my valvesprings where an issue with mine st 17psi...



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Italianjoe1
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[*] posted on 17-7-2017 at 05:51 PM


I ran 25psi on a set of BC springs with stock 5e cams, at 7000 rpms. I plan to turn it to 8k, I don't worry with decent springs in there about losing shims but I guess i'll find out.

The shimless buckets cost as much as a decent set of springs, and confer no actual performance advantage, where a stronger spring can actually give better valve control at higher rpms for more power.

I don't know if the shimless buckets are lighter though, if they are, that will actually let weaker springs work better at high rpms.
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