Author Topic: four into one intake  (Read 1864 times)

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Offline country joe

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four into one intake
« on: May 31, 2010, 05:07:29 AM »
 Hey y'all! I had this idea that will be total blasphemy to most of the sohc members, but I think would work great. Has anyone ever heard of anyone selling or currently making 4 into one intake manifolds for sohc fours? I have seen a couple in The Horse chopper magazine, but I believe they were totally homemade. The only reason I thought of it was it would take a lot of the work out of adjusting the carbs and such. Just easier maintainenance, and simplicity overall. I know where I can score a Mikuni HS 42 real cheap, and figured why not a four into one intake with this sucker on it? Hell, I don't know, the Mikuni might be too small, but I just wnated to kn ow if anyone here has either done a four into one, or knows where I can get one. Thanks
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Offline Gonzowerke

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Re: four into one intake
« Reply #1 on: May 31, 2010, 05:41:51 AM »
QUADRAJET BABY!!!!!




Seriously, no, I don't know where you can get one.
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Offline crazypj

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Re: four into one intake
« Reply #2 on: May 31, 2010, 06:20:22 AM »
Good reason not to do it is it runs rich on middle cylinders and lean on outer ones, plus you lose a bunch of performance.
 If you want a low HP single carb bike, get a CB125
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Offline Frankencake

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Re: four into one intake
« Reply #3 on: May 31, 2010, 07:33:31 AM »
I have seen it. No, there is no place to buy one.  They do run lean on the outside cylinders.  If anything, you should think about twin carbs instead of 1>4.  Your rings will thank you.
"Sure, if you don't want that bike in your backyard, I guess I'll take it."  "I'll probably just scrap it......"

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Offline gerhed

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Re: four into one intake
« Reply #4 on: May 31, 2010, 11:08:13 AM »
4 into 2 from cycle-x
Works well
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Offline faux fiddy

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Re: four into one intake
« Reply #5 on: May 31, 2010, 04:51:18 PM »
I'd like to see any fuel injetion/ megasquirt conversions, if any were around. Even better than a carb.

I've read about the newer mikuni ibeat FI and the system doesn't require high pressure fuel pumps and lines. It's common on indonisian honda scooters; virtually non-existent  elsewhere and unobtanium as an after-market tinkerer's jewel. I think this stuff could have wonderful application on the SOHC-4  if you could get it, and it could be 1 n2 4, 2  into 4, or 4 n2 4.
« Last Edit: May 31, 2010, 05:35:06 PM by poor boi »
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Offline Retro Rocket

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Re: four into one intake
« Reply #6 on: May 31, 2010, 05:02:54 PM »
I'd ike t see any fuel injetion/ megasquirt conversions if any were around. Even better than a carb.

I've read about the newer mikuni ibeat FI and the system doesn't require high pressure fuel pumps and lines. It's common on indonisianhonda scooters; virtually non-existent  elsewhere and unobtanium as an after-market tinkerer jewel. I think this stuff could have wonderful applicatin on the SOHC-4  if you could get it, and it could be 1 n2 4, 2into 4, or 4 n2 4.

Do a search , there's a couple of guys on here running microsquirt systems...
This thread is quite long but very informative.
http://forums.sohc4.net/index.php?topic=30624.0


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Offline faux fiddy

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Re: four into one intake
« Reply #8 on: May 31, 2010, 06:00:17 PM »
Not really meaning to threadjack this , but if doing something different thanstock maybe FI is the way to go.

Here's what I'd like to do for a conversion. One on each cylider, self contained with it's own fuel pressure.

http://www.mikuni.co.jp/e/iBeat/index.html

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Offline country joe

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Re: four into one intake
« Reply #9 on: June 01, 2010, 08:03:34 AM »
thanks for all the input guys it has been very helpful. A fuel injection system would really kick ass! I agree there. I'm gong to check out cycle x I think. Again thanks all!
'78 Honda CB550K
'79 Yamaha IT400
'74 H-D Sprint 350 (basket case)