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Old 07-01-2009, 07:26 AM   #1
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Default JP Pro 99 Conrod (part number?)

Hi Guys,
I've got a JP Modified Pro 99 Buggy (offroad) engine. I believe it is technically a 7-port motor, although there are 11 ports on it in total if I remember correctly.

It was running great the last time I used it (about 4 years ago), and it still has good compression. I believe it has a long life left.

But there is a tiny bit of play in the conrod lower bushing interface at TDC, so I'm wondering what conrod part number/s will fit this engine if anyone knows for sure. I'm guessing something from NR or RB should fit.

Any help appreciated.
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Old 07-02-2009, 08:03 AM   #2
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Originally Posted by uDi_MP7.5 View Post
Hi Guys,
I've got a JP Modified Pro 99 Buggy (offroad) engine. I believe it is technically a 7-port motor, although there are 11 ports on it in total if I remember correctly.

It was running great the last time I used it (about 4 years ago), and it still has good compression. I believe it has a long life left.

But there is a tiny bit of play in the conrod lower bushing interface at TDC, so I'm wondering what conrod part number/s will fit this engine if anyone knows for sure. I'm guessing something from NR or RB should fit.

Any help appreciated.
The Novarossi part # 07000 rod will fit your JP .21. The RB Concept rod will not fit because the crank pin dia. is larger on the RB cranks. Just to be safe, i would check the crank pin of your JP and make sure it is still round. Richard D
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Old 07-03-2009, 08:51 AM   #3
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Thanks for that, do you know any cheap sources for the rod?

I also found this thread:
http://3hobby.net/phpbb/viewtopic.php?p=33338

It seems to suggest the 07009 is an updated version of the same rod:
http://www.infernosonly.com/Novaross...p/fms07009.htm

Is that correct?
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