lifter knocking

[big idealist]

anybody have any estiments on how much it would cost for me to change my lifters just on the exhaust side??? also...how long it would take... cuz im tired of listening to it...its pretty bad... any help or suggestions would be appriciated... thanks... jc

 

[AJ'S 88NA]

They may just need clearenced. Check the TSRM on how to check the lash.

 

[lintlars]

It may be your push rod bearings





We do not have lifters as stated above check the clearances

 

[BlackMKIII]

Shim and buckets, buddy. And it's not cheap either.

 

[jdub]

It may be your push rod bearings

What kind of motor you talking about...a SBC?

Shim and buckets, buddy. And it's not cheap either.

The 7M is shim over buckets...the TSRM calls them valve lifters. The lifters should not need replacement...shims as required to meet spec. Here's how to check valve clearance:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=EM&P=8

Suggest you check cam bearing clearance as well:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=EM&P=48


BTW - the lifters usually make a tapping sound at half the the engine speed if the clearances are off. If the sound is more of a knock at a 1:1 with engine rpm, you've got bigger problems