Dyno of my H1 engine with and without exhaust
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From: Fredericksburg, VA, USA
Dyno of my H1 engine with and without exhaust
B20VTEC built by DFE Enterprises (Thanks a lot DonF) to Honda Challenge H1 rules
Custom Web Cams
Ported B16 Head
GE Cam Gears
ITR IM
ITR TB
Hondata (Thanks SGT for tuning)
Max Timing 25-26 degrees (old fuel)
400cc Precision Injectors (Thanks Boostfed)
B20 Block
Honda OEM Pistons
GSR Rods
ITR Crank
ITR Tranny
SMSP 4-1 Prototype Header
Short 2-1/2" test pipe into a 60mm B pipe/resonator and 60mm axle back tubing into a 2-1/2" Magnaflow 5x8x14 muffler (Hey, the 60mm system was free so what can I say?)
2 year old fuel, rusty AC Delco spark plugs, old oil, dirty air filter, worn out muffler bearings, dented header, 99 degrees outside, no oil cooler, unbalanced tires, no oil in the tranny and it has only 40 miles on it, this dyno reads low, and a couple more of the standard excuses you read about.
Now here it is with open header.
So the 60mm system was holding her back, not sure why Steve (SGT) stopped at 8200, it may have been the blood dripping from his ears. Also, while running this header open it required more tuning at vtec cross over. The above is the second run with open header. The first run with open header had a worse dip at vtec so Steve moved vtec xover up a bit and got run13. More tuning would have cleaned this up, no doubt. We only made a total of 7 pulls, 2 of which were open header. This particular 4-1 header likes to have an exhaust attached to it, since we saw similar results in the tunerzine header test, which was run all open header.
I'll also be running this engine with my B19 multi piece 4-2-1 header that DonF currently has, so I'd expect to see a few more hp. This engine should be putting down around 220whp once the header is changed and a proper exhaust is used. Overall I'm very happy with the results and can't wait to get it on track. Thanks again to DonF at DFE.
Modified by SMSP at 11:06 PM 9/23/2005
Custom Web Cams
Ported B16 Head
GE Cam Gears
ITR IM
ITR TB
Hondata (Thanks SGT for tuning)
Max Timing 25-26 degrees (old fuel)
400cc Precision Injectors (Thanks Boostfed)
B20 Block
Honda OEM Pistons
GSR Rods
ITR Crank
ITR Tranny
SMSP 4-1 Prototype Header
Short 2-1/2" test pipe into a 60mm B pipe/resonator and 60mm axle back tubing into a 2-1/2" Magnaflow 5x8x14 muffler (Hey, the 60mm system was free so what can I say?)
2 year old fuel, rusty AC Delco spark plugs, old oil, dirty air filter, worn out muffler bearings, dented header, 99 degrees outside, no oil cooler, unbalanced tires, no oil in the tranny and it has only 40 miles on it, this dyno reads low, and a couple more of the standard excuses you read about.
Now here it is with open header.
So the 60mm system was holding her back, not sure why Steve (SGT) stopped at 8200, it may have been the blood dripping from his ears. Also, while running this header open it required more tuning at vtec cross over. The above is the second run with open header. The first run with open header had a worse dip at vtec so Steve moved vtec xover up a bit and got run13. More tuning would have cleaned this up, no doubt. We only made a total of 7 pulls, 2 of which were open header. This particular 4-1 header likes to have an exhaust attached to it, since we saw similar results in the tunerzine header test, which was run all open header.
I'll also be running this engine with my B19 multi piece 4-2-1 header that DonF currently has, so I'd expect to see a few more hp. This engine should be putting down around 220whp once the header is changed and a proper exhaust is used. Overall I'm very happy with the results and can't wait to get it on track. Thanks again to DonF at DFE.
Modified by SMSP at 11:06 PM 9/23/2005
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From: Woodbridge, NJ, Middlesex
Re: Dyno of my H1 engine with and without exhaust (SMSP)
Dave, I say you should try a Hytech header and it'll hit 215 ... i'm pretty sure. Try the Endyn bumpstix and I bet 219-220. you'll rule H1 
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Thread Starter
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From: Fredericksburg, VA, USA
Re: Dyno of my H1 engine with and without exhaust (Big Teggie)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Big Teggie »</TD></TR><TR><TD CLASS="quote">Dave, what dyno did you use?</TD></TR></TABLE>
DynoJet at HP Works
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer »</TD></TR><TR><TD CLASS="quote">I believe thats about what the top guys in H1 are making, so looking good Dave.</TD></TR></TABLE>
Well we started to put together the parts for engine #2. Going with a 89mm crank on that one, so probably won't run much more than 8000 rpm. But it will be a light weight B series .
DynoJet at HP Works
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer »</TD></TR><TR><TD CLASS="quote">I believe thats about what the top guys in H1 are making, so looking good Dave.</TD></TR></TABLE>
Well we started to put together the parts for engine #2. Going with a 89mm crank on that one, so probably won't run much more than 8000 rpm. But it will be a light weight B series
.
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From: Southern California, U.S.A.
Re: Dyno of my H1 engine with and without exhaust (SMSP)
Not too shabby 
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP »</TD></TR><TR><TD CLASS="quote">
2 year old fuel, rusty AC Delco spark plugs, old oil, dirty air filter, worn out muffler bearings, dented header, 99 degrees outside, no oil cooler, unbalanced tires, no oil in the tranny and it has only 40 miles on it, this dyno reads low, and a couple more of the standard excuses you read about.
</TD></TR></TABLE>
Conservative tune
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP »</TD></TR><TR><TD CLASS="quote">
2 year old fuel, rusty AC Delco spark plugs, old oil, dirty air filter, worn out muffler bearings, dented header, 99 degrees outside, no oil cooler, unbalanced tires, no oil in the tranny and it has only 40 miles on it, this dyno reads low, and a couple more of the standard excuses you read about.
</TD></TR></TABLE>
Conservative tune
Thread Starter
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Joined: Nov 2000
Posts: 5,135
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From: Fredericksburg, VA, USA
Re: (RudeBwaiSi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RudeBwaiSi »</TD></TR><TR><TD CLASS="quote">Why did you opt to use the ITR crank, instead of the B20 or LS?</TD></TR></TABLE>
The slightly better R/S ratio with the stock B20 block. Next one will have a B20 crank though, but like I said 8000 max rpm.
The slightly better R/S ratio with the stock B20 block. Next one will have a B20 crank though, but like I said 8000 max rpm.
That is going to feel SO nice. 
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Joined: May 2002
Posts: 5,197
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From: Atl. Beach, fl, duval
Re: Dyno of my H1 engine with and without exhaust (sscguy)
The other reason Dave and I decided on the "R" crank and rod VS LS, is the rules require stock bottom end parts. The "R" rod with the larger bolts, and beam section will be more reliable in the road-racing application of living between 6000-8600 RPM's all weekend long.
When he gets more than 10 Miles on the gearbox, that is brand new from Acura, and some timing, I am sure he will be happy.
This motor was built to Honda challenge rules, no after market rods, pistons, sleeves, intake manifold, throttle body.
When he gets more than 10 Miles on the gearbox, that is brand new from Acura, and some timing, I am sure he will be happy.
This motor was built to Honda challenge rules, no after market rods, pistons, sleeves, intake manifold, throttle body.
Thread Starter
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From: Fredericksburg, VA, USA
Re: Dyno of my H1 engine with and without exhaust (b19coupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe »</TD></TR><TR><TD CLASS="quote">
Conservative tune </TD></TR></TABLE>
I can't believe I forgot that one.
Conservative tune
</TD></TR></TABLE>I can't believe I forgot that one.
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From: land of the sheep, home of the hypocrite
Re: Dyno of my H1 engine with and without exhaust (SMSP)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SMSP »</TD></TR><TR><TD CLASS="quote">worn out muffler bearings</TD></TR></TABLE>
low blinker fluid maybe...
Looks pretty nice! Thanks for posting the graphs.
low blinker fluid maybe...
Looks pretty nice! Thanks for posting the graphs.