Installing a New 350cc/295head

SE GA Dawg · 07-07-2009, 06:56 AM

Can someone tell me what to expect from a new mci 350cc engine with a 295 head and 8 to 1 gears? Questions I have are, without a govener what rpm's will I see and what would safe rpm's be? Does anyone have a known speed possible, with the change?
Are blown head gaskets a problem? Not looking to be a speed king just want to touch 30mph.
Any information about this combination of toys would be appreciated.

Thanks,
SE GA Dawg

2008 TXTG
5" lift kit
22 x 10 x 12 tires
Rear seat
80" roof

Quadmaster · 07-07-2009, 05:40 PM

Quote:

Originally Posted by SE GA Dawg

Can someone tell me what to expect from a new mci 350cc engine with a 295 head and 8 to 1 gears? Questions I have are, without a govener what rpm's will I see and what would safe rpm's be? Does anyone have a known speed possible, with the change?
Are blown head gaskets a problem? Not looking to be a speed king just want to touch 30mph.
Any information about this combination of toys would be appreciated.

Thanks,
SE GA Dawg

2008 TXTG
5" lift kit
22 x 10 x 12 tires
Rear seat
80" roof

I'm running this setup.
The engine is still limited by a rev limiter in the ignition. The 295 head will give it more umph. It's a seat of the pants thing. I don't have a tach, so I can't help with rpm's. I have stock gears and 22's and on a good day with just me in the cart it will hit 30 wide open.Barley just barley on flat ground. Head gaskets have not been an issue. I've never blown one yet.

Quadmaster · 07-07-2009, 05:42 PM

By the way what did you do with the old motor ??

SE GA Dawg · 07-07-2009, 05:56 PM

Thanks for the info, just what I needed to hear. I used the old motor to defray the cost of the new one(traded-in). I also swapped the rear end out for high speed (8:1) gears. Since I run on flat ground and city streets I didn't think a HS gear would be a problem.

Thanks again.
SE GA Dawg

tonyton · 07-07-2009, 07:26 PM

Did you get the new MCI motor? Is the exhaust manifold aluminum? Or is it cast and bolted on?
If it is the older style, you won't have a problem. The MCI model didn't work for me. Either the pistons hit the head, or the valves hit the piston.

pizzamaker · 07-07-2009, 07:53 PM

Quote:

Originally Posted by tonyton

Did you get the new MCI motor? Is the exhaust manifold aluminum? Or is it cast and bolted on?
If it is the older style, you won't have a problem. The MCI model didn't work for me. Either the pistons hit the head, or the valves hit the piston.

i'm glad somebody brought up the MCI question, i didn't want to get into it to deep.
this would be the first MCI/old style head swap that i know of, i'm not saying it can't be done but i can't see enough payoff for the amount machining and labor involved.

tonyton · 07-07-2009, 07:57 PM

Quote:

Originally Posted by pizzamaker

i'm glad somebody brought up the MCI question, i didn't want to get into it to deep.
this would be the first MCI/old style head swap that i know of, i'm not saying it can't be done but i can't see enough payoff for the amount machining and labor involved.

That EXPERIMENT cost me $10.50 for a head gasket.

I can tell you...it won't just bolt on!

pizzamaker · 07-07-2009, 08:03 PM

Quote:

Originally Posted by tonyton

That EXPERIMENT cost me $10.50 for a head gasket.

I can tell you...it won't just bolt on!

its like putt'in horse shoes on a black bear.

SE GA Dawg · 07-08-2009, 07:08 AM

Will be using the head off my existing 2008 mci 295 engine for the new mci 350cc engine.

Quadmaster · 07-08-2009, 05:29 PM

Quote:

Originally Posted by SE GA Dawg

Will be using the head off my existing 2008 mci 295 engine for the new mci 350cc engine.

I have the old style motor and head....

07-07-2009, 06:56 AM	#1
SE GA Dawg Not Yet Wild Join Date: Jun 2009 Location: SE Georgia Posts: 15	Installing a New 350cc/295head Can someone tell me what to expect from a new mci 350cc engine with a 295 head and 8 to 1 gears? Questions I have are, without a govener what rpm's will I see and what would safe rpm's be? Does anyone have a known speed possible, with the change? Are blown head gaskets a problem? Not looking to be a speed king just want to touch 30mph. Any information about this combination of toys would be appreciated. Thanks, SE GA Dawg 2008 TXTG 5" lift kit 22 x 10 x 12 tires Rear seat 80" roof

07-07-2009, 05:42 PM	#3
Quadmaster Gone Wild Join Date: Oct 2008 Location: Out past the Creek, Arizona Posts: 856	Re: Installing a New 350cc/295head By the way what did you do with the old motor ??

07-07-2009, 05:56 PM	#4
SE GA Dawg Not Yet Wild Join Date: Jun 2009 Location: SE Georgia Posts: 15	Re: Installing a New 350cc/295head Thanks for the info, just what I needed to hear. I used the old motor to defray the cost of the new one(traded-in). I also swapped the rear end out for high speed (8:1) gears. Since I run on flat ground and city streets I didn't think a HS gear would be a problem. Thanks again. SE GA Dawg

07-07-2009, 07:26 PM	#5
tonyton Gone Wild Join Date: Jan 2009 Location: Alabama Posts: 2,120	Re: Installing a New 350cc/295head Did you get the new MCI motor? Is the exhaust manifold aluminum? Or is it cast and bolted on? If it is the older style, you won't have a problem. The MCI model didn't work for me. Either the pistons hit the head, or the valves hit the piston.

07-08-2009, 07:08 AM	#9
SE GA Dawg Not Yet Wild Join Date: Jun 2009 Location: SE Georgia Posts: 15	Re: Installing a New 350cc/295head Will be using the head off my existing 2008 mci 295 engine for the new mci 350cc engine.

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