B20a crank in a R block?
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B20a crank in a R block?
I searched on this topic and didnt find too much info.
I have a GE sleeved C5 block which I will be building for a turbo application and I also have a B20a crank lying around so I was curious if anyone had done this with custom rods and pistons before?
This is assuming the crank is totally balanced.
scott
I have a GE sleeved C5 block which I will be building for a turbo application and I also have a B20a crank lying around so I was curious if anyone had done this with custom rods and pistons before?
This is assuming the crank is totally balanced.
scott
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Re: B20a crank in a R block? (scooter)
I know quite a few people who use the ls (b18a/b) crank in a b-series vtec block. Basically an ls vtec without the external oil line and what not.
[Modified by vtecvoodoo, 3:26 PM 3/3/2003]
[Modified by vtecvoodoo, 3:26 PM 3/3/2003]
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Re: B20a crank in a R block? (vtecvoodoo)
b20a is not LS. b20b/z is
yeah, im normally not one to scream r:s ratio, but it would be horridly low without
using a longer rod
yeah, im normally not one to scream r:s ratio, but it would be horridly low without
using a longer rod
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Re: B20a crank in a R block? (scooter)
The reason that this isn't a good idea, is because the stroker crank will force you to use pistons with a raised ring package. This will make your ring lands very thin and weaker. Now, for All-Motor...it wouldn't be a terrible idea, but for Turbo...I wouldnt recommend it. Solution: Sell me that crank for $100.
Suprdave
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Re: B20a crank in a R block? (scooter)
95 mm stroke?
With an ~85 mm bore?
Yikes! I don't think the B-series head would flow well enough to support 2.2 litres of displacement.
With an ~85 mm bore?
Yikes! I don't think the B-series head would flow well enough to support 2.2 litres of displacement.
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Re: B20a crank in a R block? (Suprdave)
Ha, $100? How about $200? With all the blood and sweat that went into me pulling this thing at the Junkyard I should sell it for $1000 .
scott
scott
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Re: B20a crank in a R block? (Nameless)
LS rods would work. I have found out that it does put undue stress on the rings, pistons and sleeves causing them to wear out mucho prematurly. The ratio would be somewhere in the 1.44 range wich is too low for my application. If you had a deck plate or a B20b/z block it would work good.
scott
scott
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Re: B20a crank in a R block? (RealTypeR)
Trying to go faster everyday..... I would be at the Expo in a heartbeat if it was closer...maybe next year....SEBRING anyone?????
scott
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Re: B20a crank in a R block? (scooter)
a bunch of us crackers are going to Sebring in a couple weeks - I heard something about 30 bucks and RealTime will be there
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Re: B20a crank in a R block? (RealTypeR)
ya, 12 hours is comming 12th-14th. Chinmotorsports event is the 29th. I am gonng try to make both.
scott
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Re: B20a crank in a R block? (Christian)
I will let you know how the B-series head breathes when I put my setup together in a few weeks.
It will be interesting to see. Something to keep in mind is the B-series VTEC head was essentially designed for a 1600 cc engine with an 81 mm bore. A head designed for a larger bore can use larger ports and more valve area, something Honda took into consideration when designing the K-series heads.
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Re: B20a crank in a R block? (MK Ultra)
the limiting factor here i think is valve size.
Due to valve angle, we are limited to stock size valves in order to run cams
large enough to feed a 2L sufficiently. I would like to win the lottery so I
could customize a cylinder head to my specs.
Due to valve angle, we are limited to stock size valves in order to run cams
large enough to feed a 2L sufficiently. I would like to win the lottery so I
could customize a cylinder head to my specs.
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Re: B20a crank in a R block? (sgT)
the limiting factor here i think is valve size.
Due to valve angle, we are limited to stock size valves in order to run cams
large enough to feed a 2L sufficiently. I would like to win the lottery so I
could customize a cylinder head to my specs.
Due to valve angle, we are limited to stock size valves in order to run cams
large enough to feed a 2L sufficiently. I would like to win the lottery so I
could customize a cylinder head to my specs.
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Re: B20a crank in a R block? (sgT)
If I won the Lotto, I'd also have some custom 4.0 litre blocks cast (they'd have twice as many cylinders ), as well as custom-forged flat-plane cranks and the aforementioned cylinder heads. Guess I'd need some kind of custom-fabricated intake manifold, too.
Forged aluminium suspension arms would be nice, too.
I could go on and on and on...
Forged aluminium suspension arms would be nice, too.
I could go on and on and on...
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