Is there any way to stroke a B series engine by mixing and matching cranks rods and blocks? Like taking a B16 and using the crank out of a GSR or ITR and some different rods. Would this work? If it can be done, has anyone attempted it?

 

I'm not an expert on this, so take this with a grain of salt.

I've heard that the most you can stroke a B16 to is just short of 1.8l. (hence the B17a found in early integras which uses the same block). The GSR engine has a little bit taller block (10mm? i think) than the B16, so you would probably have issues with the pistons hitting the head. The NEWER B16a engines actually share the the taller block as the gsr, but have the same crank ratio, and just use longer rods to move the pistons up a bit in the bore. So yes, i guess it is possible.

Again, i have no first hand experiance with this stuff, but this is what i have gathered from all my time on the net

 

to correct you, its only B16B from a Civic Type R that uses a B18C block, and special rods.....crank is similiar to that of a b16a....

but only way to stroke a B16a is to go with a b17a a crank/rods or get a custom Spoon, Toda stroker kit...

 

I was reading up on stroke lengths and rod lengths last night and it looks like the only way to do it is by using custom length rods. I think I calculated that you would have to have a B16 rod shortened by about 5.1mm and use the B18C crank. This would make up for the 10.2mm's of extra stroke on the crank. So, if that is possible, who makes custom rods?

The only reason I want to do this is because of the fact that the older B16's can be had for like $1500 or less while the GSR is like over $2500 - 3000. It seems that it would be cheaper to get new rods made a GSR crank and use the same pistons that come in the B1 or get some ITR pistons. You would also have some nice strong rods since they are going to be custom jobs from like crower or something.

Just a thought.

 

Stupid double post!!!


[Modified by 2.2, 6:50 AM 6/27/2001]

 

With the right rods, you can stroke a B16 by using a B20 crank. This is the crank that Crower uses in their stroker kits for the B Series motors.

 

B20B/Z or a B20A crank? And can you buy just the rods from them or do you have to get the whole setup?

 

I would thnik that instead of shortening the rod, the ring package and wrist pin could be moved up on the piston allowing a longer rod.

 

This would require new pistons right? Or could the stock ones be machined? Also, is something like 5.1mm too long of a distance to machine into the pistons without causing reliablity problems?

 

http://www.crvtec.com
http://www.theoldone.com

You can find gobs of info on TOO's site.

 

That is actually where I got stroke and rod lengths from. Great sites for information.

I definatly think that this is a feasable(sp?) project and may even be cheaper if you can find the right parts. It seems to be a good solution for someone with like a Civic Si that wants some more power. Instead of spending all the $ on like a ITR engine they can get something close for a lot less money. Nice thought.

 

I beleive he uses the B20A series crank. I was not aware that a difference existed.

Anyway, I do beleive that you can buy the rods from him seperatley. Either that or call them and see what the length of their rod is and match it to a Honda rod.

 

Yeah, there is a stroke difference. The B20A is like 95mm stroke and the B20b/Z is like 89mm or something.

 

Problem with the stroker kits is that with such a long stroke when you spin 8,000 rpms your piston speeds are going to be extreme, and you will have more sidewall loading.

Toda makes a stroker kit for the b16....$2600 and it gets you about a 1.8 liter engine, but your R/S ratio will be a shitty 1.54....and the stroke will be 87.2mm.
http://www.todaracing.com/B16A.html

I wonder if the stroker kit would be worth $2,600??? What kind of power increase would there be I wonder? That is around the price of a turbo kit.

 

Is it at all possible do bore the honda engines for more displacement?

 

Yes, in a way. You can have the motor resleeved to a larger bore. One good place for this is Bensons.