89mm B18B/B20 *Knife-edged* *Micro-Polished* Crankshaft Crank
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Joined: Dec 2006
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From: Va Beach
Re: 89mm B18B/B20 *Knife-edged* *Micro-Polished* Crankshaft Crank
Eagle Stroker kits ARE garbage, enough said. Eagle's import products suck period, but that's for another thread in a totally different forum/category. Can't believe people compared a LS crank to an Eagle. Sad.
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Joined: Apr 2006
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From: Charlottesville, VA
Re: 89mm B18B/B20 *Knife-edged* *Micro-Polished* Crankshaft Crank
Thread Starter
!! Buy My Parts !!
Joined: Apr 2006
Posts: 2,764
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From: Charlottesville, VA
Re: 89mm B18B/B20 *Knife-edged* *Micro-Polished* Crankshaft Crank
Just some more info - in the event you need it
Actually -
the only difference between the B18B and B20 is the bore. Piston diameter on the B18B is 81mm, whereas the B20 is a 84mm bore.
This has Nothing to do with the STROKE though - which is 89mm on both the B18B and B20. And they Also use the same Rods.
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That being said. The difference between a B18C and a B18B (as per the displacement) is the Crank. Both have 81mm bore (pistons diameter) but the B18C uses a 87mm stroke, not 89mm like the B18B/B20. This is where you'd get the extra 50cc in the LSVtec application.
If you have any more questions/comments/concerns lmk. I've been building these motors for years, so I know what works.
-Justin
Originally Posted by xeno
yo the crank cant be for b18b and b20 man... unless the b18b was bored out and you used the b20 crank on it..? b20 crank is bigger because its a bigger dis. than a b18 the rods are longer also..
Actually -
the only difference between the B18B and B20 is the bore. Piston diameter on the B18B is 81mm, whereas the B20 is a 84mm bore.
This has Nothing to do with the STROKE though - which is 89mm on both the B18B and B20. And they Also use the same Rods.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
That being said. The difference between a B18C and a B18B (as per the displacement) is the Crank. Both have 81mm bore (pistons diameter) but the B18C uses a 87mm stroke, not 89mm like the B18B/B20. This is where you'd get the extra 50cc in the LSVtec application.
If you have any more questions/comments/concerns lmk. I've been building these motors for years, so I know what works.
-Justin
Last edited by p2r; Nov 17, 2008 at 06:14 AM.
