dyno on sunday
Aug 14, 2006 | 04:14 PM
#41
Originally Posted by parish8
i found out last night from a stop i can build all the boost i want if i brake boost it long enough. i was able to light up all 4 off the line with no nitrous but it took me about 4 seconds of brake boosting to get to a 5psi launch presure.
Pictures/Video please!!!
Aug 14, 2006 | 06:29 PM
#43
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single digit dreamer
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From: omaha ne
Originally Posted by Stoichiometric
What cam do you run now? Do you think there is any power left in a cam swap?
Aug 14, 2006 | 09:40 PM
#45
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single digit dreamer
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From: omaha ne
got some charts to look at.
at the low boost i would say i am making almost exactly the same hp per psi. you can see where the two graphs cross and it is right at the same point as the boost crosses. it seemed high but i guess it is right where it was before. run 9 is the single pt88 and run 1 is the twins. you can see the diference in spool time there too.
from there it just goes down hill. here is a 20psi comparison. you can see where it wanted to build boost up to about 10psi but it didn't spool very quickly from 10-20psi. up top where the boost was about the same psi it was down about 50hp with the twins. run 8 is the twins and run 13 is the single 88.
the next trip to the dyno should be a lot better. i got the vicjr intake tonight and starting bolting that up and i will at least have some manual cut outs on the 3" dp's. 3.5" pipe is prety expensive so i might not upgrade the dp's just yet.
at the low boost i would say i am making almost exactly the same hp per psi. you can see where the two graphs cross and it is right at the same point as the boost crosses. it seemed high but i guess it is right where it was before. run 9 is the single pt88 and run 1 is the twins. you can see the diference in spool time there too.
from there it just goes down hill. here is a 20psi comparison. you can see where it wanted to build boost up to about 10psi but it didn't spool very quickly from 10-20psi. up top where the boost was about the same psi it was down about 50hp with the twins. run 8 is the twins and run 13 is the single 88.
the next trip to the dyno should be a lot better. i got the vicjr intake tonight and starting bolting that up and i will at least have some manual cut outs on the 3" dp's. 3.5" pipe is prety expensive so i might not upgrade the dp's just yet.
Aug 17, 2006 | 03:41 AM
#47
jim in the 19 psi range you said it had nothing left, any idea of what was running out of?
i thought with the twins you would of had so much more then your single set up.
it's a start, i still have my fingers crossed for 1300 or close to it.
i thought with the twins you would of had so much more then your single set up.
it's a start, i still have my fingers crossed for 1300 or close to it.
Aug 17, 2006 | 06:31 AM
#48
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single digit dreamer
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From: omaha ne
Originally Posted by PappyDan
jim in the 19 psi range you said it had nothing left, any idea of what was running out of?
i thought with the twins you would of had so much more then your single set up.
it's a start, i still have my fingers crossed for 1300 or close to it.
i thought with the twins you would of had so much more then your single set up.
it's a start, i still have my fingers crossed for 1300 or close to it.
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