Project MT500 Twinshock Motorcrosser

vtrsp1da0 · Post by **vtrsp1da0** » Tue Jul 01, 2014 8:12 pm

Looks great Gary

Is the chain blue too? If it is mate I think you need help

Minter · Post by **Minter** » Tue Jul 01, 2014 9:30 pm

vtrsp1da0 wrote:Looks great Gary

Is the chain blue too? If it is mate I think you need help

Cheers Dave... Yep blue chain too!

Post by **jungleMTbiker** » Tue Jul 01, 2014 10:39 pm

Minter wrote:It's only 490 cc now..!

Ah. "Special" crank, 604 head, 32mm headers, new (non-standard) piston; I somehow just assumed that it had been bored and stroked.

It's nice to see it all coming together!

Yoof · Post by **Yoof** » Tue Jul 01, 2014 11:22 pm

jungleMTbiker wrote:
Minter wrote:It's only 490 cc now..!
Ah. "Special" crank, 604 head, 32mm headers, new (non-standard) piston; I somehow just assumed that it had been bored and stroked.

It's nice to see it all coming together!

Its for the 500cc motocross class

Minter · Post by **Minter** » Tue Jul 01, 2014 11:40 pm

CC doesnt matter this weekend anything goes!

Heres this evenings progress... should get it finished tomorrow and loaded on the van.. first test run will be Sat morning free paractice!

rustybike · Post by **rustybike** » Wed Jul 02, 2014 7:12 am

Looking good Gary,
Are you going to stick it on a dyno? would love to know how much BHP it's kicking out. Have you measured the compression?
Let us know how you do at weekend.

Minter · Post by **Minter** » Wed Jul 02, 2014 10:45 am

rustybike wrote:Looking good Gary,
Are you going to stick it on a dyno? would love to know how much BHP it's kicking out. Have you measured the compression?
Let us know how you do at weekend.

Cheers Russ will do, not measured compression yet, was only discussing this with yoof yesterday. Was going to rolling road it tomorrow but need to get to farleigh anmd get set up..
If it survives farleigh i'll get ill rolling roaded after, be interesting what the pipe help produce..

Post by **TBM** » Wed Jul 02, 2014 12:27 pm

Is that the prototype for the pipe you're thinking of producing? Looks good

Minter · Post by **Minter** » Wed Jul 02, 2014 8:52 pm

TBM wrote:Is that the prototype for the pipe you're thinking of producing? Looks good

if it works well it will form the basis of the big bore system. There is a reason the headers are of different lengths.. Exhaust chap reckons its to help the exhaust pulses reach the collector at differnt times which help scavange the cylinder of exhaust gasses. It certainly responds well when blipping the throttle. This theory would not work well on multi cylinder engines... apparently!

Proof will be in the riding! If it works you may see it appear on my blue traily Armstrong and the Sportax shop!

rustybike · Post by **rustybike** » Wed Jul 02, 2014 9:30 pm

Do you do monthly payments for all the bits I want....

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Project MT500 Twinshock Motorcrosser

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Re: Project MT500 Twinshock Motorcrosser

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Re: Project MT500 Twinshock Motorcrosser

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