Good/bad day at the track...
Good/bad day at the track... I had a hunch that the car was running lean so I addded a second walbro 255 inline to complement hte 255 intank I already had. After a day full of 120.XX mph passes (still at 4 psi) ,solid 12.5s 
no traction 2.3 60s lol, I think the stock motor gave up the ghost. After what was a strong run I pulled over to get my slip and I heard knocking. I didn't notice anything during the run that would have alerted me to a problem. But it knocks real loud at idle now, I can't notice it at any cruising rpm. The famous give away of smoking out of the valve cover cap is present too.
Im not mad, just more dissapointed that I didn't get to push the stock motor further. I know I wasn't pushing it very hard, I was just pushing my own luck by not having larger injectors and a tune.
Oh well, time for forged bottom end
Ive been researching the diamond pistons, how cone on all sites that I read say the piston is for boost is a flat top? All the dished pistons listed seem to not fit a 3.905 bore. Id like to reach 8.5 or maybe even a little less CR with the stock heads.
Also what kind of rings do you guys recommend?
no traction 2.3 60s lol, I think the stock motor gave up the ghost. After what was a strong run I pulled over to get my slip and I heard knocking. I didn't notice anything during the run that would have alerted me to a problem. But it knocks real loud at idle now, I can't notice it at any cruising rpm. The famous give away of smoking out of the valve cover cap is present too. Im not mad, just more dissapointed that I didn't get to push the stock motor further. I know I wasn't pushing it very hard, I was just pushing my own luck by not having larger injectors and a tune.
Oh well, time for forged bottom end
Ive been researching the diamond pistons, how cone on all sites that I read say the piston is for boost is a flat top? All the dished pistons listed seem to not fit a 3.905 bore. Id like to reach 8.5 or maybe even a little less CR with the stock heads.
Also what kind of rings do you guys recommend?
Although I did see a nice price on a forged short block from APE Im pretty set on building my own
I wonder if the block got damaged? Should be finding out tonight...
I wonder if the block got damaged? Should be finding out tonight...
Tiago, I got the -8.6 cc dished FI pistons from diamond for the 3.905 bore, from thunder last year, just a heads up......and they came with a full set of rings too.
PN 11503
http://www.thunderracing.com/catalog...vid=3&pcid=121
J
PN 11503
http://www.thunderracing.com/catalog...vid=3&pcid=121
J
PN#11503 included the rings as well s the wrist pins?
Wonder why they show the rings selling sperately then. I will call them to make sure after I knwo what parts I need.
What CR woudl those pistons give on an otherwise stock motor?
Wonder why they show the rings selling sperately then. I will call them to make sure after I knwo what parts I need.
What CR woudl those pistons give on an otherwise stock motor?
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Originally Posted by Tiago
What CR woudl those pistons give on an otherwise stock motor?
but using
Head (cc's) == 72
Gasket Thickness (inches) == .052
Deck Height == .0001
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I don't think rods are a necessity under 700rwhp.....it's been done too many times. If you want the insurance, go ahead as some do but I have yet to see a rod failure unless you are shifting at 6800+ Now you will need quality arp rod bolts.
My bad, mine were part of a GP that I started so I got a complete package(pistons and rings) for a decent price. But the wrist pins were included with the pistons, the rings were seperate.Try to start a GP on the sponsor board, it might save you some cash
J