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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

Piston For Tw 170s Around 8.5:1 Compression

  • Thread starter Thread starter TOOLOW91
  • Start date Start date Feb 18, 2014
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MY 85 GT

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Feb 18, 2014
#21
  • Feb 18, 2014
  • #21
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...
 

85rkyboby

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Feb 18, 2014
#22
  • Feb 18, 2014
  • #22
@TOOLOW91 what else are you going to do to the motor while it's out and apart? I'm taking mine out soon as well.
 

NIKwoaC

中國製造
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Feb 18, 2014
#23
  • Feb 18, 2014
  • #23
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.
 
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85rkyboby

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#24
  • Feb 18, 2014
  • #24
@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.
 

TOOLOW91

If you're the village idiot what's that make me?
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Feb 18, 2014
#25
  • Feb 18, 2014
  • #25
85rkyboby said:
@TOOLOW91 what else are you going to do to the motor while it's out and apart? I'm taking mine out soon as well.
Click to expand...
HCI, s trim . new oil pan , valve covers . pretty it up and all new gaskets with head studs
 

MY 85 GT

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Feb 18, 2014
#26
  • Feb 18, 2014
  • #26
85rkyboby said:
@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.
Click to expand...
'
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...
 

85rkyboby

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Feb 18, 2014
#27
  • Feb 18, 2014
  • #27
TOOLOW91 said:
HCI, s trim . new oil pan , valve covers . pretty it up and all new gaskets with head studs
Click to expand...
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.
MY 85 GT said:
'
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...
Click to expand...
Oh okay. So you're plans to just do away with the PCV, and run both covers to the catch/vent can?
 

MY 85 GT

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Feb 18, 2014
#28
  • Feb 18, 2014
  • #28
^^^ Yes I want to eliminate the PCV for now and if the tuning place thinks I need it I will install it back...I want to get a re-tune this yr...
 
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TOOLOW91

If you're the village idiot what's that make me?
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Feb 18, 2014
#29
  • Feb 18, 2014
  • #29
MY 85 GT said:
^^^ Yes I want to eliminate the PCV for now and if the tuning place thinks I need it I will install it back...I want to get a re-tune this yr...
Click to expand...
I was looking into maybe a catch can as well . but haven't made it that far yet
 

84Ttop

They make new pistons every day, so why worry?
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Feb 18, 2014
#30
  • Feb 18, 2014
  • #30
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.
 
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A5literMan

At least it is lumpy...
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Feb 18, 2014
#31
  • Feb 18, 2014
  • #31
TOOLOW91 said:
HCI, s trim . new oil pan , valve covers . pretty it up and all new gaskets with head studs
Click to expand...
What did you do with that piston/rod combo you were thinking about running? The ones from your old engine.
 

TOOLOW91

If you're the village idiot what's that make me?
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Feb 18, 2014
#32
  • Feb 18, 2014
  • #32
A5literMan said:
What did you do with that piston/rod combo you were thinking about running? The ones from your old engine.
Click to expand...
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.
 
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85rkyboby

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Feb 18, 2014
#33
  • Feb 18, 2014
  • #33
84Ttop said:
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.
Click to expand...
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!
 

85rkyboby

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Feb 18, 2014
#34
  • Feb 18, 2014
  • #34
TOOLOW91 said:
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.
Click to expand...
MMM DART Block, I'm so ready.
 

84Ttop

They make new pistons every day, so why worry?
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Feb 19, 2014
#35
  • Feb 19, 2014
  • #35
85rkyboby said:
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!
Click to expand...
The catch can is probably a quart and a half if I had to guess and I run a k&n breather on the top of it.
 
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MY 85 GT

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Feb 19, 2014
#36
  • Feb 19, 2014
  • #36
^^^^ Mine is like yours Its a decent size and it has the K&N filter on top...and the bulk head fittings im using for the vlave covers have built in baffles...just havent installed the set-up yet...lol...
 
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