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Discussion Starter · #1 ·
im goin to be running a k&t head with 20 domes.. im 300 above sea level.... not sure about alky or gas yet

421 cub motor...

 

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I am running a prodesign with a custom cut 18cc alky dome.

350cc drag ported and i am about 900'
 

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Some say yes and some say no, it just depends on what your builder says.

The guy that did my cylinders told me to get some alky cut domes so i did.
 

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My preface disclaimer- Ive always said if we all did it the same, you'd just go to Wal-Mart to buy your stuff.

Here's what my testing has lead me to - Ive found that as they are two different fuel types- they also work better with two different head designs.
 

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Discussion Starter · #6 ·
cool.. i didnt know that. if i do go alky.. should i talk to f.a.s.t. about alky domes or try and get ahold of someone like NOSS about it ??
 

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Well like Backcountry said every ones setup is different, but if he is your builder than ask him first.

IMO it's all trial and Error on setup.
 

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Discussion Starter · #8 ·
is that a long trail or short trail , bobby ??

i always believe in trial and error... j/k lol
 

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nothing but error here.
im using a blue head that says "banshee" on it.
stock stroke 350cc 64.5mm bore drag port by area 51 offroad
on 50/50 race gas and alky mix.
 

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Discussion Starter · #11 ·
QUOTE (hilarious @ Jun 27 2008, 03:08 PM) index.php?act=findpost&pid=3864nothing but error here.
im using a blue head that says "banshee" on it.
stock stroke 350cc 64.5mm bore drag port by area 51 offroad
on 50/50 race gas and alky mix.
what domes ?? stock cyln ?
 

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QUOTE (hilarious @ Jun 27 2008, 02:34 PM) index.php?act=findpost&pid=3868im not sure on the cc size of the domes but theres about 180psi
worth of compression.
I run a white knuckle head.It's one piece with 2 domes and 4 o-rings I think.Very nice and I don't deal with all those o-rings.lol.
 

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QUOTE (Backcountry @ Jun 27 2008, 03:36 PM) index.php?act=findpost&pid=3851My preface disclaimer- Ive always said if we all did it the same, you'd just go to Wal-Mart to buy your stuff.

Here's what my testing has lead me to - Ive found that as they are two different fuel types- they also work better with two different head designs.

And my bike runs very well and consistent with Backcountry's domes...

I talked with him over PMs, figured out what I needed...and it's been going like the Energizer bunny since....

Thanks again Dan!
 

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The only head i have had a problem with it my pro design on one of the fin's in the middle for the water jacket it had broken that little lip off and i had to more less rebuild it but other than that it is the only one i know of with a problem.


I had a Chariot head and the quality was outstanding for sure, the only thing was [email protected] domes wont fit in it unless mine where a odball set.
 
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