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Author
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Topic: what pistons do i need
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p5.0
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Member # 6160
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posted
 
 
i got edlbrock heads with 2.02 valves and summit tells me they wont clear the ctock pistons but then wont tell me what are my options. was wondering if ca ford'rs can held me out. part numbers will help too.
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RIP 91 300zx
sold 90 300zx
05 GSXR sold
94 gt 331 sold
01 lightning
03 ninja 636 sold
67 mustang coupe project
03 R1 sold
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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p5.0
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Member # 6160
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posted
o yea its a 302 that imma rebuild with e cam and 1.6 rockers. keeping stock rods. anything else you guys need to help me out let me know
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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2stangs69-91
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Member # 1951
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posted
most good aftermarket pistons have big valve reliefs these days. Check out the SRP pistons the are made by J&E and have nice reliefs in them. Check out Mahle , J&E,and Ross.
[ November 02, 2007, 06:29 PM: Message edited by: 2stangs69-91 ]
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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93PONY
Mr. Valve Events
Member # 60
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posted
Look for aftermarket pistons with 2 valve reliefs. If they have 4 like factory pistons, they will not clear 2.02 valves.
You're better off NOT reusing the stock rods. They are press-fit pin setups & you will have to pay a machine shop to press out the stock pistons/pins, resize the rods & press in the new pistons/pins. This machine work could end up costing as much as a new set of bushed forged stock-replacement rods (~$299).
Might as well buy new ones & end up with a stronger, full-floating setup.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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kingmoochr
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Member # 5834
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posted
full floating rods still need to be pin fit (the factory machining is not acceptible) and its nowhere near 300 dollars to remount rods on new pistons. more in the range of 100-150
Posts: 881 | Registered: Jul 2005
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93PONY
Mr. Valve Events
Member # 60
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Machining of pins/pistons/rods is such high quality these days You shouldn't have any problems with pins not fitting the rods. I've only had 1 problem in the last 5 years....& it turned out the pins were undersized by .001". Definately noticable when test fitting the pins in the rods.
I've never had to have pins fitted.
If the stock rods need to be resized along with removing the stock pistons/installing the new ones, the cost to use stock rods will be nearly as high as new pieces. & Even if it's 1/2 the cost.....what's $150 these days. 2 tanks of gas in my truck! LOL
FWIW, the casting date on my wife's stock 5.0 Connecting Rods out of her 91 GT was 1964. ![[Eek!]](eek.gif)
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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2stangs69-91
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Member # 1951
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posted
you have been lucky I have had to have 3 out of 4 race motors I built this year pin fit when they were supposed to be good. Some piston issues some pin bushings all after market stuff. All could have been run but they were tighter,and stiffer than we thought safe.
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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93PONY
Mr. Valve Events
Member # 60
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Pin to bushing clearance is criticle....no doubt about it. We must be getting lucky.....we only use the parts that I know to have worked well together in the past.
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www.advancedenginedevelopment.com
SCT dealer
Dynotuning
(916)715-7569
Posts: 4266 | From: Fair Oaks, CA | Registered: Nov 2000
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kingmoochr
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Member # 5834
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posted
2 stangs highlighted why they need to be pin fit. dont do it and you have the real potential to run into major problems. reconning rods and fitting them doesnt take more than 1.5 hrs, with a labor estimate at 100/hr
Posts: 881 | Registered: Jul 2005
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HCI RACING
New Member
Member # 8009
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posted
Personally We've been working with ARIAS Pistons and they rock!!! Ill check tomorrow at the shop for what a rough cost is for them. But 93 Pony hit the main point "pin location" no matter what application you are running.
Are u N/A, S/C, NOS or Turbo??
What would ur desired compression height be?
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THANK YOU,
HCI RACING
Posts: 8 | From: HCI RACING | Registered: Nov 2007
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p5.0
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Member # 6160
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posted
im going with da go go juice. 100 shot most likely. the the thing is this is my daily driver and im trying to keep it smogable. when that time comes. i was also thinking about having the relief valves redone on the stock pistons to save me some money. what you guys think.
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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p5.0
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Member # 6160
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posted
ttt. read last post from me...
Posts: 593 | From: Sunnyvale | Registered: Oct 2005
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2stangs69-91
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Member # 1951
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posted
It has been done many times before and worked ok. As long as your tune is good stock forged pistons are pretty strong.
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69 Mustang on hold
1991 LX hatch getting a make over
1994 F150 4X4 351
2006 Yamaha V-max 1200 Modded
Posts: 3711 | From: Redding | Registered: Oct 2002
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