09 39ft rocket reviews?????
02-12-2012, 08:52 AM
#81
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02-13-2012, 09:03 AM
#82
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Donnie told me 108 at 4800 rpm? the boat was not propped right.. ??? i kinda thought they would have had it right when it left the factory but i guess not.
im taking a guess at mid 120s with your at 1100hp.. may be a little lite.. but thats my guess. cant wait to see it!
im taking a guess at mid 120s with your at 1100hp.. may be a little lite.. but thats my guess. cant wait to see it!
02-15-2012, 04:09 PM
#83
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It pretty much boils down to us getting smarter and technology getting better over the last 7 years since we originally built them.
We changed the heads to BRODIX BB 2 Xtra cnc. I also did quite a bit of hand porting to them. I went with a little larger camshaft with a 4/7 swap. I changed the blower from a 3.3L Whipple to a 4.0L Whipple. We also changed from an MSD distributor and 6M-2 box to a DIS with 58X crank trigger wheel and 8 coil packs.
The biggest thing for me was not the increase in power. It's easy to make more power with more boost and rpm. We were able to make more power with a little less boost than it had before and do it on cheaper gas. Previously it made 970 hp on 93 octane with 8 psi boost. We were able to break 1100 hp with 89 octane with less than 8 psi boost. Than with 91 octane, we made just about 1200 hp with less than 10 psi.
We were able to just make a more efficient engine. For me, thats what means the most. That's why we changed to the 4.0L Whipple. It is a more efficient blower than the 3.3L. We could have stayed with the 3.3 based on boost alone. However, we now have enough blower to turn it up more if we ever want to.
Eddie
We changed the heads to BRODIX BB 2 Xtra cnc. I also did quite a bit of hand porting to them. I went with a little larger camshaft with a 4/7 swap. I changed the blower from a 3.3L Whipple to a 4.0L Whipple. We also changed from an MSD distributor and 6M-2 box to a DIS with 58X crank trigger wheel and 8 coil packs.
The biggest thing for me was not the increase in power. It's easy to make more power with more boost and rpm. We were able to make more power with a little less boost than it had before and do it on cheaper gas. Previously it made 970 hp on 93 octane with 8 psi boost. We were able to break 1100 hp with 89 octane with less than 8 psi boost. Than with 91 octane, we made just about 1200 hp with less than 10 psi.
We were able to just make a more efficient engine. For me, thats what means the most. That's why we changed to the 4.0L Whipple. It is a more efficient blower than the 3.3L. We could have stayed with the 3.3 based on boost alone. However, we now have enough blower to turn it up more if we ever want to.
Eddie
02-16-2012, 07:55 PM
#86
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congrats!!
02-17-2012, 06:28 PM
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