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Author
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Topic: How much boost would you run?
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Secnd2nun64
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Member # 1431
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posted
 
 
With 10:1 compression. 6lbs? 10lbs? This would be with forged pistons.
Posts: 1460 | From: CA | Registered: Jun 2002
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1fastmach1
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Member # 10137
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posted
if the bottom end is fully forged then 10psi if not only pistins are forged then no more than 8psi
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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Secnd2nun64
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Member # 1431
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posted
Cool, this would be on a 393w stroker. It would be a cast crank good to the same hp as the block around 600hp. The lowest compression kit I can find with pistons cut for the twist wedge design has a 10.20 compression ratio.
Probably just swap the 3.33 paxton pulley back to the 3.75 pulley giving around 6-7lbs. It'll be more than enough power for my little street car.
Posts: 1460 | From: CA | Registered: Jun 2002
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1fastmach1
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Member # 10137
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posted
IF U GOT THE MONEY GO 2 DSS RACING CUS THEY HAVE ALL TYPES OF DIFFRENT COMP RATIOS RITE NOW THERE BUILD ME A 408 WITH 8:6;1 COMP DART BLOCK WITH DIMOND PISTONS , CROWLER RODS AND A SONNY BRANT FORGED CRANK. AND ITS RATED OVER 1500HP
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REDLINE MOTORSPORTS CC EST 2011
1993 CHP sold
2004 mach 1 408 Windsor n20 fed
R.I.P. JORGE GUTIERREZ JR
6/13/1982- 11/05/2013
Posts: 2592 | From: clawwwitter to 7th st | Registered: Jul 2010
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1SLOWLX
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Member # 558
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posted
quote:
Originally posted by 79 cobra:
IF U GOT THE MONEY GO 2 DSS RACING CUS THEY HAVE ALL TYPES OF DIFFRENT COMP RATIOS RITE NOW THERE BUILD ME A 408 WITH 8:6;1 COMP DART BLOCK WITH DIMOND PISTONS , CROWLER RODS AND A SONNY BRANT FORGED CRANK. AND ITS RATED OVER 1500HP
Get it built local Mail order engines suck!
Posts: 5231 | From: bay area | Registered: Nov 2001
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Secnd2nun64
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Member # 1431
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posted
I'm going to have the machine work done to the block, have the kit balanced and build it myself. The DSS kit is out of my price range. I'm looking at the coast high performance street fighter 393w kit or just buying the individual parts myself to make my own kit. Using eagle crank/rods,probe pistons,total seal plazma moly rings and sealed power bearings. Either way would be around the same price but would get better rings/bearings if I piece it myself. The pistons I have found will give me a 10.2 compression ratio with my 61cc heads. Doesn't say how thick of a head gasked they are using. Cometic has some head gaskets that are .04 thickness and .075 thickness. I think the .075 should get me around a 9.75 compression.
Posts: 1460 | From: CA | Registered: Jun 2002
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86turbocoupe
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Member # 10454
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posted
What u could do is just get the piston u have dished so that u can retain that proper squish factor around the edge of the cylinder to allow the compression rings to seal as they wouldin a stock application. 9.0 9.5:1 would be ideal and u could roughly get about 13 to 14 psi with a cast crank. Good luck
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89lxhatch-rip
81 4cylinder swap-rip
86coupe- F303 1.7 RR bored and carb'd 309 5 lug mach1 brakeS DD FR500S bbk longtubes o/r h-pipe
Posts: 521 | From: 510 | Registered: Nov 2010
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