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Matt_nett

Bigger carb ?

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Matt_nett

Does anyone know if any of the bigger carbs from the 12hp plus Stratton engines will fit on the 8hp a-81 engine? And where to source parts?

Cheers matt

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gwest_ca

Do you have this problem?

Garry

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Matt_nett

No just wondered if it would give it a bit more grunt? Need new air intake and exhaust aswell. Apart from that it's spot on. Just needs seat redoing , respray and restickered.

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WVHillbilly520H

I hear that's the way the Kohlers were set up 1 carb for 7-9 then 10-12 and 14-16hp and so forth so in theory using the next size carb should boost power somewhat, but like on cars you can go "too" big and loose your low end but gain it all on the top end, Jeff.

IMAG3310.jpg

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Matt_nett

It's just finding a carb that fits 😅

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Electro12WH

Throwing more gas in it won't help if you don't have the cam and valves to make use of it. You'll open the throttle and it will just bog down. The whole system must be improved together.

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Lee1977

What will help those old flat head Brigg engines is to take a rotor steel grinding tool and clean out all the casting crap in the intake and exaust ports. You will have to remove the valves to do a good cleaning. If there are tapped holes for an exaust flange removing the pipe treads will help also.

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elcamino/wheelhorse

@WVHillbilly520H Nice , how many cubic inches and HP in the Chevy?

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WVHillbilly520H
4 hours ago, elcamino/wheelhorse said:

@WVHillbilly520H Nice , how many cubic inches and HP in the Chevy?

It started out as a virgin SB400 now it's bored out .030" over to 406 CI with Dart heads with a healthy solid roller Comp cam, forged 10.3-1 CR pistons on a Eagle crank and i-beam rods, pushing around 580 HP at the flywheel by a computer Dyno program so +/- 15% in the real world, Jeff.

Screenshot_20170518-195453.png

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elcamino/wheelhorse

Holy get up and sit down.

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