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Re: What to Build to compete with a SR20 BBC
[Re: camastomcat]
#1695440
11/18/14 04:13 PM
11/18/14 04:13 PM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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Quote:
To the O/P's original question about what Mopar would you pick to compete with a SR20 engine. I have around 38k into my Predator engine with a steel block. There are few that know how to get 1200+ HP out of them, and I happen to know one. If you are ready to put down 38-40+ thousand to have a Mopar label, be my guest. Get started in the right direction by contacting boatracer 572. He's been successful with those combos. Or you could call Sunset Racecraft and order their cookie cutter 632 SR20 model for around 15k less.
Read his post again.........its a CONVENTIONAL headed class. Predators don't fit that bill and hence the general consensus of "it can't be done"
Monte
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Re: What to Build to compete with a SR20 BBC
[Re: Monte_Smith]
#1695441
11/18/14 04:20 PM
11/18/14 04:20 PM
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Joined: Jan 2008
Posts: 4,255
Canada
WO23Coronet
master
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master
Joined: Jan 2008
Posts: 4,255
Canada
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Quote:
Quote:
To the O/P's original question about what Mopar would you pick to compete with a SR20 engine. I have around 38k into my Predator engine with a steel block. There are few that know how to get 1200+ HP out of them, and I happen to know one. If you are ready to put down 38-40+ thousand to have a Mopar label, be my guest. Get started in the right direction by contacting boatracer 572. He's been successful with those combos. Or you could call Sunset Racecraft and order their cookie cutter 632 SR20 model for around 15k less.
Read his post again.........its a CONVENTIONAL headed class. Predators don't fit that bill and hence the general consensus of "it can't be done"
Monte, what would you design/change on the B1 PSO to bring it up to snuff for today's standards? Or what would you design for a 4.84 block to compete? Could it be done with a wedge head?
Monte
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Re: What to Build to compete with a SR20 BBC
[Re: Monte_Smith]
#1695445
11/18/14 04:46 PM
11/18/14 04:46 PM
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Joined: Jan 2008
Posts: 4,255
Canada
WO23Coronet
master
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master
Joined: Jan 2008
Posts: 4,255
Canada
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Sorry for all the questions but what exactly is the problem with the Siamese ports? Is it just that it limits size or is there something else?
Last edited by WO23Coronet; 11/18/14 04:46 PM.
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Re: What to Build to compete with a SR20 BBC
[Re: camastomcat]
#1695447
11/18/14 06:44 PM
11/18/14 06:44 PM
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Joined: Feb 2013
Posts: 760
Canada
CTD5.9
super stock
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super stock
Joined: Feb 2013
Posts: 760
Canada
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Quote:
Or you could call Sunset Racecraft and order their cookie cutter 632 SR20 model for around 15k less.
The OP needs 584 or less, Sunsets 582 SR20 puts out 1154 HP @ 7400 RPM, 870 FT LBS @ 6400 RPM according to the website.
Didn't Best Machine build a B1-PSO 588 Koleno for a member here? That dyno sheet from their facebook says 1215@7600 and 907@6300. Even with 4 less cid off that build and a single 4 instead you would think it could be close to 1154.
Money would be the huge major difference no arguing that.
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Re: What to Build to compete with a SR20 BBC
[Re: WO23Coronet]
#1695449
11/19/14 03:40 PM
11/19/14 03:40 PM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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Quote:
Does anyone have any real data on how much a canted valve helps vs non canted? I know it unshrouds the valve as it opens but I've never seen flow bench data on how much it helps
There would be no data on that. Nobody just takes a head, lays the valves over and calls it a day. It is a total redesign
Monte
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Re: What to Build to compete with a SR20 BBC
[Re: moparmafia]
#1695452
11/19/14 11:52 PM
11/19/14 11:52 PM
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Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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It would be a waste, it would be outlawed because it is not a chevy, heck it would not even be a ford so they would legislate it out of existence.
We have the Hemi that solves the problem caused by the valve being shrouded by the small bore dictated by the small bore center and they won't let it run even though they actually built thousands of cars with them.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: What to Build to compete with a SR20 BBC
[Re: HotRodDave]
#1695453
11/20/14 04:47 AM
11/20/14 04:47 AM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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Much to the dismay of HEMI guys, in a large cubic inch application, a HEMI solves nothing, other than to get your azz outrun by an equal cubic inch "other" brand wedge. In large cubic inch applications, all you can gain is stroke, because the bore is the bore, the chamber is the chamber and the knot on the piston is the same. They are hard to make compression in and the parts are HEAVY. A 650 inch Chevy or Ford wedge, will crush a true HEMI of the same size every day, power wise in an N/A application.Now if you flatten the chamber out, that is another story, but then it is a CHEMI or a Ford Hemi and not a TRUE HEMI at all.
As for a big bore space, spread port Mopar block and head, from the ground up design..........you are probably looking at 500k to get that going. Who is going to invest that for such a small market. Unfortunately, Mopars time has long passed to enter into this field. Plus, to make equal power, the heads are going to be made just like the other brands, except maybe you have a skirted Mopar(ish) looking block and really, whats the point. Just buy a skirted Arias "new century" block, some killer aftermarket heads, slap some Mopar stickers on the covers and call it a day. In todays world of BIG cubic inch wedge engines, they are all aftermarket. Chevy, Ford, Pontiac, Olds, whatever head you choose all look basically the same and the only factory part that MIGHT fit one of the blocks is the water pump...........Not what diehards want to hear, but facts are facts.
Monte
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Re: What to Build to compete with a SR20 BBC
[Re: Monte_Smith]
#1695454
11/20/14 12:18 PM
11/20/14 12:18 PM
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Joined: Jan 2013
Posts: 167
maryland
74yellowduster
member
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member
Joined: Jan 2013
Posts: 167
maryland
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Quote:
power wise in an N/A application.
n/a smogger boggers with
ENGINE INCLUDES THE FOLLOWING COMPONENTS
chevy shape DART BLOCK
sure they have the support of a block company to make them viable. DART hates mopars they even make honda blocks.
they would be no better than mopars except for you can run right out and get an aftermarket block that will withstand the power.
as far as ALL OUT top engine is a hemi they are making 10000 hp on blown nitrometh/methanol hemis
they have been the top for over 40 years and always will be no matter what the forum warriors here come up with
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Re: What to Build to compete with a SR20 BBC
[Re: 74yellowduster]
#1695456
11/20/14 03:59 PM
11/20/14 03:59 PM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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Quote:
Quote:
power wise in an N/A application.
n/a smogger boggers with
ENGINE INCLUDES THE FOLLOWING COMPONENTS
chevy shape DART BLOCK
sure they have the support of a block company to make them viable. DART hates mopars they even make honda blocks.
they would be no better than mopars except for you can run right out and get an aftermarket block that will withstand the power.
as far as ALL OUT top engine is a hemi they are making 10000 hp on blown nitrometh/methanol hemis
they have been the top for over 40 years and always will be no matter what the forum warriors here come up with
Ahh, and here we go.....the old "Top Fuel" HEMI argument, like that means ANYTHING when talking about N/A motors. You DO understand the difference in a boosted(forced air) motor and naturally aspirated.....correct???
Forum warriors huh.........no, how about somebody who is at the track working or racing every weekend and sees the TRUTH for what it is and doesn't keep his head buried in the sand.
Monte
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