Piston For Tw 170s Around 8.5:1 Compression

Yeah that is one thing I like about these forums guys are really great and helpful !!! My car has been turbo for almost 3 yrs...always ran good just need to do a re-tune and fix a few small issues..one is tops on my list is a catch can system...you might want to look into that also...with boost just something I learned...lol...
 
  • Sponsors (?)


Yea there is not much sense in going through all the cost and time of putting new pistons in a stock block unless the cylinders are just completely shot. The stock forged pistons are more durable than the block anyway. With new pistons you'll have to re-balance and machine shop costs go up quickly. Have a (trusted) machinist look at it, but hopefully you can just get away with a ball home and fresh rings/bearings. These days the only reason to go through the trouble of boring and putting new pistons in the block is to also put a stroker kit in it. Keep it simple- throw heads on it, boost it, have fun.
 
  • Like
Reactions: 2 users
@MY 85 GT Are you looking at any specific catch can systems or just making your own? I've looked at a few kits, unfortunately have heard mixed reviews. I'm sure most of the reviews are invalid as they aren't boosting.
'
I have everything already I bought a new set of Trickflow valve covers..Bulk head fittings,lines,fittings etc and I have a Moroso catch can with -12 an fittings with a K&N air filter on top of the catch can...its a nice set-up just didn't get to install it yet...right now I just have the valve cover vented with a filter..no pcv with a filter in the lower intake...I want to plug the hole were the PCV goes and vent both valve covers..should be much better then the way I have it now...
 
HCI, s trim . new oil pan , valve covers . pretty it up and all new gaskets with head studs
Sounds good I figured I'd change out my oil pan and seal, possibly bearings, and a gasket set. Now I'll probably change my rings out since @NIKwoaC suggests it.
'
I have everything already I bought a new set of Trickflow valve covers..Bulk head fittings,lines,fittings etc and I have a Moroso catch can with -12 an fittings with a K&N air filter on top of the catch can...its a nice set-up just didn't get to install it yet...right now I just have the valve cover vented with a filter..no pcv with a filter in the lower intake...I want to plug the hole were the PCV goes and vent both valve covers..should be much better then the way I have it now...
Oh okay. So you're plans to just do away with the PCV, and run both covers to the catch/vent can?
 
I like the idea on a boosted car of venting both vcovers and eliminating the PVC system. I have -10 vents on each of my covers going to a custom catch can and it has worked great so far. I will however recommend baffles in the valve covers if at all possible.
 
  • Like
Reactions: 1 user
What did you do with that piston/rod combo you were thinking about running? The ones from your old engine.
The skirts are just way way to beat up for my liking . after thinking about it ill save the rods for when i do a dart block to make a 331 out of but i just dont want to risk the piston rocking in the motor.
 
  • Like
Reactions: 1 users
I like the idea on a boosted car of venting both vcovers and eliminating the PVC system. I have -10 vents on each of my covers going to a custom catch can and it has worked great so far. I will however recommend baffles in the valve covers if at all possible.
What size is that catch can? I just read up on the catch cans again, as its been a year since I checked up on it last. It's my lucky day as your response. Thanks a billion @84Ttop!