Nice 92mm crank B-series Dynochart - from Endyn small bore setup
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From: Woodbridge, NJ, Middlesex
Nice 92mm crank B-series Dynochart - from Endyn small bore setup
Check out the top end on this bad boy, 330+ crank hp ... its an 84.5mm bore x 92mm stroke motor with relatively high compression ..and still climbing. it's peaking at 9800rpms (I think) cause it was cutoff at that point but seems to be flattening out or maybe on the way up ... this is the type of motor that you rev the **** out of and do nice e/ts and MPH ... not bad at all for a b-series
I'll get more details on the setup.
I'll get more details on the setup.
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From: Auburn, AL, usa
Re: Nice 92mm crank B-series Dynochart - from Endyn small bore setup (Viorent Grip! EG)
whats with the dip, it appears to be after the vtec crossover? but i dont know much about reading dyno graphs
Any pictures??
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From: houston, tx, usa
Re: (Hardt)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hardt »</TD></TR><TR><TD CLASS="quote">250-265whp?</TD></TR></TABLE>
not sure how much that will translate in term of whp, but I can tell you what I've seen so far: on the WD shoot out in Import Tuner magazine, R&D won the contest with an 85 x 87 motor with hy-tech/twm, 12:1, head work, etc..., the engine made 289 hp on the Carobu engine dyno, the very next issue of Import Tuner, they stuffed that same motor into a race Crx and made 227whp, and according to those guy from the magazine, they swear it's only about 15% driveline loss, but if you do the math, that's damn near 19% driveline loss......I'm not sure if Lary's engine dyno is the same as those guys from Carobu, but asuming 15% driveline loss, then that engine should put down around 285whp, but then again we'll never know until we see it on the dynojet....
not sure how much that will translate in term of whp, but I can tell you what I've seen so far: on the WD shoot out in Import Tuner magazine, R&D won the contest with an 85 x 87 motor with hy-tech/twm, 12:1, head work, etc..., the engine made 289 hp on the Carobu engine dyno, the very next issue of Import Tuner, they stuffed that same motor into a race Crx and made 227whp, and according to those guy from the magazine, they swear it's only about 15% driveline loss, but if you do the math, that's damn near 19% driveline loss......I'm not sure if Lary's engine dyno is the same as those guys from Carobu, but asuming 15% driveline loss, then that engine should put down around 285whp, but then again we'll never know until we see it on the dynojet....
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From: N. Indiana
Re: (crx=si)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx=si »</TD></TR><TR><TD CLASS="quote">not sure how much that will translate in term of whp, but I can tell you what I've seen so far: on the WD shoot out in Import Tuner magazine, R&D won the contest with an 85 x 87 motor with hy-tech/twm, 12:1, head work, etc..., the engine made 289 hp on the Carobu engine dyno, the very next issue of Import Tuner, they stuffed that same motor into a race Crx and made 227whp, and according to those guy from the magazine, they swear it's only about 15% driveline loss, but if you do the math, that's damn near 19% driveline loss......I'm not sure if Lary's engine dyno is the same as those guys from Carobu, but asuming 15% driveline loss, then that engine should put down around 285whp, but then again we'll never know until we see it on the dynojet....</TD></TR></TABLE>.....
as in R^D motorsports? im not one to pick up a import tuner magazine...
as in R^D motorsports? im not one to pick up a import tuner magazine...
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From: Fredericksburg, VA, USA
Re: (Hardt)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hardt »</TD></TR><TR><TD CLASS="quote">250-265whp?
</TD></TR></TABLE>
Well I believe Larry built a similar bore/stroke engine for his EF and I remember it making 300-305 bhp. He then put it on a dynojet and made mid 240s. That was a 20% loss.
In another example, the engine DFE built for me (H1 HC specs) was 247bhp and made 216whp on a dynojet. That was a 12.5% loss. But I think you could count on a 15% loss for a dynojet, assuming both the engine and chassis dynos are calibrated.
Hytech built a K series engine for Roger Foo and had it on an engine dyno and then ran it on Church's dynapack. In that instance there was somewhere around a 3-4% loss from what I remember.
Nice numbers. Greg, what happened to the VE numbers? Larry always had those listed on his other graphs. Did he take it higher? What's on Page 2 of 2?
</TD></TR></TABLE>
Well I believe Larry built a similar bore/stroke engine for his EF and I remember it making 300-305 bhp. He then put it on a dynojet and made mid 240s. That was a 20% loss.
In another example, the engine DFE built for me (H1 HC specs) was 247bhp and made 216whp on a dynojet. That was a 12.5% loss. But I think you could count on a 15% loss for a dynojet, assuming both the engine and chassis dynos are calibrated.
Hytech built a K series engine for Roger Foo and had it on an engine dyno and then ran it on Church's dynapack. In that instance there was somewhere around a 3-4% loss from what I remember.
Nice numbers. Greg, what happened to the VE numbers? Larry always had those listed on his other graphs. Did he take it higher? What's on Page 2 of 2?
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Re: Nice 92mm crank B-series Dynochart - from Endyn small bore setup (SkankyEJ7)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkankyEJ7 »</TD></TR><TR><TD CLASS="quote">whats with the dip, it appears to be after the vtec crossover? but i dont know much about reading dyno graphs</TD></TR></TABLE>
Well, nobody can really say what causes it w/o looking at the specs, but if you notice, the a/f ratio goes its richest in that area....
I think dave's last statement about the church dynapack seals the deal for that topic...lol
The 15-20% area seems to be about right, if you take a look at honda's OEM horsepower claims versus the average whp they put out....preludes for instance...rated 195, put down about 165 on average...
Well, nobody can really say what causes it w/o looking at the specs, but if you notice, the a/f ratio goes its richest in that area....
I think dave's last statement about the church dynapack seals the deal for that topic...lol
The 15-20% area seems to be about right, if you take a look at honda's OEM horsepower claims versus the average whp they put out....preludes for instance...rated 195, put down about 165 on average...
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From: Woodbridge, NJ, Middlesex
Re: (SMSP)
Dave, yeah I'm not sure you can count that last 20% loss that Larry did only because there were definitely some wheel alignment issues that just robbed more power than nominal.
VE was purposely left out, afterall you know how technical discussion ends up on the all motor forum on honda-tech.
the mods on the motor that I recall included:
- the new Endyn combustion chamber
- this specific setup was designed to restrict airflow through engine at overlap
- Endyn bumpstix
- HyTech production bigtube header
- fat fuel curve
- Endyn custom length rods and pistons
- C12 fuel
- DART short block
Typically Endyn's engine dyno vs. chassis dynojet 248c yields about 10-12% losses (all restrictions known to be down to a minimum, i.e. wheel alignment, intake location, operating engine temp, etc.
BTW, this is not my motor it's a customer's and the sheets seen here was just of the "breakin" run before shipping to the customer, hence the fat curve and early RPM cutoff. When the (roadracing) customer finishes installing Larry will try to get some dynocharts from a chassis dyno ... I don;t imagine anything lower than a peak of 285whp and thats really being very conservative.
VE was purposely left out, afterall you know how technical discussion ends up on the all motor forum on honda-tech.
the mods on the motor that I recall included:
- the new Endyn combustion chamber
- this specific setup was designed to restrict airflow through engine at overlap
- Endyn bumpstix
- HyTech production bigtube header
- fat fuel curve
- Endyn custom length rods and pistons
- C12 fuel
- DART short block
Typically Endyn's engine dyno vs. chassis dynojet 248c yields about 10-12% losses (all restrictions known to be down to a minimum, i.e. wheel alignment, intake location, operating engine temp, etc.
BTW, this is not my motor it's a customer's and the sheets seen here was just of the "breakin" run before shipping to the customer, hence the fat curve and early RPM cutoff. When the (roadracing) customer finishes installing Larry will try to get some dynocharts from a chassis dyno ... I don;t imagine anything lower than a peak of 285whp and thats really being very conservative.
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From: So Cal
Re: (Don Lackey)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Don Lackey »</TD></TR><TR><TD CLASS="quote">Is this where Combustion Contraption and B19Coupe is supposed to come in and say
RPM = Ruins Peoples Motors.
Sorry I had to say that. Just read that in another post.
That's mad power!</TD></TR></TABLE>
Yeah, im sure this is the engine i would want in my rickety econo box Honda, trusting it to get me to and from my 60 mile daily commute each day, trouble free.
Are you somehow disagreeing with the statement that RPM can be great for power increases, but accelerates wear?
RPM = Ruins Peoples Motors.
Sorry I had to say that. Just read that in another post.
That's mad power!</TD></TR></TABLE>
Yeah, im sure this is the engine i would want in my rickety econo box Honda, trusting it to get me to and from my 60 mile daily commute each day, trouble free.
Are you somehow disagreeing with the statement that RPM can be great for power increases, but accelerates wear?
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From: Baltimore, MD
Re: (Don Lackey)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Don Lackey »</TD></TR><TR><TD CLASS="quote">Is this where Combustion Contraption and B19Coupe is supposed to come in and say
RPM = Ruins Peoples Motors.
Sorry I had to say that. Just read that in another post.
That's mad power!</TD></TR></TABLE>
i thought larry himself said that?
RPM = Ruins Peoples Motors.
Sorry I had to say that. Just read that in another post.
That's mad power!</TD></TR></TABLE>
i thought larry himself said that?
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From: So Cal
Re: (GSRCRXsi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSRCRXsi »</TD></TR><TR><TD CLASS="quote">i thought larry himself said that?</TD></TR></TABLE>
He has. I didnt invent the phrase. Someone is just trying to stir up something, though im not sure why.
He has. I didnt invent the phrase. Someone is just trying to stir up something, though im not sure why.
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Re: Nice 92mm crank B-series Dynochart - from Endyn small bore setup (SkankyEJ7)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SkankyEJ7 »</TD></TR><TR><TD CLASS="quote">
whats with the dip, it appears to be after the vtec crossover? but i dont know much about reading dyno graphs</TD></TR></TABLE>
It's called you are running out of low cam (especially on the low exhaust cam) before coming into the high cam. I've seen this alot with cams that don't have more than 215 duration @0.050" primary lobes. This can also be exasperated by 4-2-1 Big Tube Headers.
No disrespect to Greg. He's a good guy.
whats with the dip, it appears to be after the vtec crossover? but i dont know much about reading dyno graphs</TD></TR></TABLE>
It's called you are running out of low cam (especially on the low exhaust cam) before coming into the high cam. I've seen this alot with cams that don't have more than 215 duration @0.050" primary lobes. This can also be exasperated by 4-2-1 Big Tube Headers.
No disrespect to Greg. He's a good guy.
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From: Single camshafting for now in, N.Y.
Re: (alterdcreations)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alterdcreations »</TD></TR><TR><TD CLASS="quote">i would be happy revving to 7500 on THAT engine</TD></TR></TABLE>
just kidding 10,000 all the way
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CHEETAH »</TD></TR><TR><TD CLASS="quote">"breakin" run before shipping to the customer, hence the fat curve and early RPM cutoff. When the (roadracing) customer ...
</TD></TR></TABLE>
what type of road racing will this engine participate in and what is the service life of this engine(meaning how long before rebuilds)
just kidding 10,000 all the way
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CHEETAH »</TD></TR><TR><TD CLASS="quote">"breakin" run before shipping to the customer, hence the fat curve and early RPM cutoff. When the (roadracing) customer ...
</TD></TR></TABLE>
what type of road racing will this engine participate in and what is the service life of this engine(meaning how long before rebuilds)