IR manifold for a small block?
#171392
12/20/08 12:48 PM
12/20/08 12:48 PM
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Joined: Jan 2005
Posts: 12,478 Kalispell Mt.
HotRodDave
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I am bored and ther is too much snowe to drive the cuda so I am kickin around the idea of building an IR manifold for my stroker motor. My question is where is a good source of info about desighn like how long and fat runners should be, side draft or down draft, what carbs work best? Mabey someone knows of a manifold being produced Motor will be a 414 stroker, mabey bigger if I can come up with more $$$ for a longer stroke. I have a pair of RHS magnum heads or aluminum mopar magnums 1.7 rockers and a XE268 cam. I mostly want to do it because it's different but I still want it to run good.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: IR manifold for a small block?
[Re: formula S]
#171394
12/22/08 01:36 AM
12/22/08 01:36 AM
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HotRodDave
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I figure if I had 250 CFM intake flow X 8cyl I would need about 2000 CFM, mabey a couple 1000cfm dominators set up with identicle primarys and secondaries. Does any one have experiance with dominators on an IR manifold?
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: IR manifold for a small block?
[Re: formula S]
#171396
12/22/08 03:37 AM
12/22/08 03:37 AM
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Anonymous
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Anonymous
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There was at one time Dominators made to suit IR Dont know the part No. or if they are still available.
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Re: IR manifold for a small block?
#171397
12/22/08 03:46 AM
12/22/08 03:46 AM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
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Quote:
There was at one time Dominators made to suit IR Dont know the part No. or if they are still available.
6214 was made for I/R applications but reversion problems were never solved & Holley killed it...
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Re: IR manifold for a small block?
[Re: 1_WILD_RT]
#171398
12/22/08 08:36 AM
12/22/08 08:36 AM
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Joined: Jan 2003
Posts: 21,122 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,122
Niles , Ohio
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what about motorcycle carbs
Chrysler Firepower
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Re: IR manifold for a small block?
[Re: HotRodDave]
#171400
12/22/08 01:55 PM
12/22/08 01:55 PM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
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The biggest motorcycle carbs TIKO are the S&S Super D, 2-1/4". However, they're side-draft, $$$, have no power circuit, and are intended for a 2 cylinder motor about the size of your cylinders. You can buy Mikuni with 48mm throats, but over $200. each and IDT that's big enough.
Boffin Emeritus
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Re: IR manifold for a small block?
[Re: 1_WILD_RT]
#171403
12/22/08 04:46 PM
12/22/08 04:46 PM
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Joined: Jan 2005
Posts: 12,478 Kalispell Mt.
HotRodDave
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A side draft may not be out of the question. I thought about getting some kinda air-gap manifold and cutting everything out except the bottom plate and flange area, then weld in some tubes to cross over and sit the carbs on the oposite side valve cover area.
Are those 2cyl motorcycle carbs 1 throat or 2? Are the cylinders the size of mine individually or combined?
A mototrcycle carb may be fine because they are desighned to feed a smaller engine but at two to three times the RPM.
If a carb is going to feed a 25 cubic inch 1 cyl @ 10,000 rpm it should feed my 50 cubic inch cylinder @ 5000 rpm, is that close to correct?
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: IR manifold for a small block?
[Re: dizuster]
#171405
12/22/08 05:11 PM
12/22/08 05:11 PM
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Joined: Nov 2008
Posts: 660 San Diego
formula S
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Quote:
Just wondering by why would you even want to do this?...
first three words in his orignal post "I am bored"
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Re: IR manifold for a small block?
[Re: formula S]
#171406
12/22/08 05:15 PM
12/22/08 05:15 PM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
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Quote:
Quote:
Just wondering by why would you even want to do this?...
first three words in his orignal post "I am bored"
Gonna spent alot of time & money on something thats been problematic & never proven any big gains in the past...
Might be a better idea to take up Bowling..At least every bowler I know drinks...
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Re: IR manifold for a small block?
[Re: formula S]
#171407
12/22/08 05:21 PM
12/22/08 05:21 PM
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Joined: Jan 2005
Posts: 3,639 Oakland, MI
dizuster
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Quote:
Quote:
Just wondering by why would you even want to do this?...
first three words in his orignal post "I am bored"
Yeah but if you were board, don't you think you'd at least try to do something to make the car faster...not slower? lol...
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Re: IR manifold for a small block?
[Re: dizuster]
#171408
12/22/08 05:35 PM
12/22/08 05:35 PM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
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Quote:
Quote:
Quote:
Just wondering by why would you even want to do this?...
first three words in his orignal post "I am bored "
Yeah but if you were board , don't you think you'd at least try to do something to make the car faster...not slower? lol...
Must have wood....
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Re: IR manifold for a small block?
[Re: 1_WILD_RT]
#171409
12/22/08 06:38 PM
12/22/08 06:38 PM
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Joined: Jan 2003
Posts: 21,122 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,122
Niles , Ohio
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The s&s super carbs you can run em on one cyl or two and they put the on 120in motors that only turn about 6000
Chrysler Firepower
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Re: IR manifold for a small block?
[Re: HotRodDave]
#171410
12/22/08 07:21 PM
12/22/08 07:21 PM
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Joined: Oct 2007
Posts: 4,219 New York
polyspheric
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A side draft may not be out of the question. I thought about getting some kinda air-gap manifold and cutting everything out except the bottom plate and flange area, then weld in some tubes to cross over and sit the carbs on the oposite side valve cover area.
Are those 2cyl motorcycle carbs 1 throat or 2? All 1 throat
Are the cylinders the size of mine individually or combined? Each
If a carb is going to feed a 25 cubic inch 1 cyl @ 10,000 rpm it should feed my 50 cubic inch cylinder @ 5000 rpm, is that close to correct? Yes, I know that's what the "formula" shows, but it doesn't work. The small cylinder need a small carb or it has poor response, the big cylinder needs a big carb or it has no power.
Cutting off everything but the flange and chunk of the runner and extending them across is exactly what a 1960-61 Chrysler long ram runners look like (except they ended in plenums). There are also Moon Weber manifolds like that - there's no other way to hide the length and put the hood on.
I agree - it's a lot of trouble without much gain - and that's if you get it right. Most people give up after much $$$ and &<?$@~`**!!!!.
Boffin Emeritus
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