Heymow - Lawnmower Racing Forum
Engine Help => Briggs OHV & Vanguard => Topic started by: DieselPacko on October 30, 2013, 05:44:48 pm
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Hello guys.
I have a vanguard 14 hp engine in my garage.
I want to make a lawn mower racing engine of this.
My question is :
If I use Vanguard V twin cam from EC 35-3030 with billet flywheel, ARC rods, ported heads, dual valve springs, billet roller rockers, and dual mikuni 26mm carbs .
How much power do I get from this engine ?
And how much can I rew this engine with thees parts .
Thanks for the help.
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Maybe you guys dont know about this engine :lala:?
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its a small twin most run 18 pluse bigger bore.
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25-30 hp if the heads,exhast, carbs,and intake were done right??29 cubes is pretty small v-twin.Building a 30 cube vanny now and hoping for at least 30 hp.
owen
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OK.
We do not hawe a lot of rules in sweden regarding lawn mower racing.
We hawe wery simple roules.
Klass 1 : Lawn mower with maximum 13 hp mower engine with free tuning. But no turbo charging or supercharging .
Klass 2 : lawn mower with maximum 23 hp + free tuning. No turbo or boost .
In booth klasses the mower is not alloud to be wider then 1.05 meters and not longer than 2.2 meters.
Free modifikation to the chassy.
Stif mounted axels.
We hade a race on asfalt last week. The red camouflage traktor is mine. its a klass 1 race. I have a 13 hp OHV briggs with home grinded cam, ported head, homebalanced crank .
You canb se it on youtube here.
Video not sutable for Heymow.
Easy and simple.
In my oppinion big engines do not like high rpm.
Therfor I want to prepare a small vanguard for racing. Like the 30 ci vanguard. I think this engine can stand easier the high RPM-s compare to the 35 or 40 engines.
Am i right ?
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We have run the 35 and 38 cubic inch Vanguards 12000 RPM,how high are you going to rev the 30 cu. in. ?
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redline 8500 rpm. But i want the engine to last for mor then a couple of races.
its cheap to buy parts from US, but the shipping cost is 3 times more then the parts. :worried:
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"last" is the key word. They may SURVIVE at 10,000 rpms plus...but don't count on them LASTING. Count on very regular servicing...and frequent valve spring valve guide and valve replacement.
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1 more question about this engine.
What is the safe and highest RPM for a standard vanguard 30 CI engine without the governor ?
Its not the "black" vanny. Its a older red vanguard yet still made in Japan.
Is it OK to run the engine at 5000 RPM without any problems, or should I go below 5000 or i´ts OK with 6000 ?
What is your recommendations ?
One modification to the engine will be made. The flywheel . I will order a ARC flywheel. That´s it. the rest of the engine will be stock