I am thinking about building a stroker motor using a custom crank, and I am not sure who to get one from. I want a crank that is nitride treated like the factory Honda cranks are.

I noticed that Scat advertises nitride treated cranks. But who else does stuff like this? I want a 95mm stroke B series crank.

Anyone have experience with the stroker cranks? Is buying a new crank the best way to go, or just getting a company to stroke out a stock LS crank?

Right now I am about 50/50 on building a stroker B vs a stroker H2B setup, and the cost of the H2B is swaying me towards the B.

thanks

Mike

 

Not sure what you mean when you say "or just getting a company to stroke out a stock LS crank". Do you mean just using a stock LS crank? Unless this will be a race motor or you're going for a longer life between rebuilds and keeping the car more as a daily to weekend warrior, I'd probably keep the stroke to 92mm. If I was going to build a B20 myself, I'd go sleeved 85x92, 11.5:1, CC ported B16a head, Victor X intake, 3" cold air intake (for the street) and Skunk pro 3 cams, custom header, 3" exhaust. I'd also change the final drive to a 4.9, change first and fifth gears and enjoy the killer setup.

 

I'm a b-series buy but if you are looking for a 95 mm stroke then I would go with the H-series. 95 mm b-series cranks are a PITA especially Eagle's version.

 

depending on what u wanna do with the car/motor but if money is not an issue, k is the way, h would be plan b! B-series on the other hand is ok but if u up the displacement u are gonna be dealing with problems like replaceing engine bearings from time to time and lots of ring wear, especially on 95 cranks, i personally have one myself and it's only use for track.

 

Yeah, 95mm is a bit much for a B-series that's a DD, 92mm on the other hand is the bomb.

 

If you want to go 95mm, go with the h; you can do a g23 or h23vtec and get 95mm stroke off a stock crank which will likely be around the same price, if not cheaper than a custom stroker kit for the b. Are you talking about off-set grinding an LS crank? You might be able to get a couple mm out of it, but don't know how many have done or are doing it.

 

if I go H series I am going to run a 99mm K24 crank in it. I actually have a pair of H22A heads laying around my shop along with a newer H22 block with the 55mm main journals. I also have a sleeved B series block and my fully built GSR head. I'm just thinking it is cheaper to go with the 86X95 motor rather than get an adapter plate, mod the K crank, sleeve my H block, port an H head, etc... to build a 2.5L H series.

As for "stroking" a stock LS crank, you get a machine shop to modify the crank so the rod journals are farther out. As for the 95mm stroke, you simply move out the rod journals 3mm farther from the center than stock. I can get a company to do the crank work and then nitride treat the crank just like they come from Honda, or I could just buy a stroker crank. I am asking you guys what experience you have with these kinds of cranks. I am pretty sure I can make 300 WHP out of an 86X95 motor and run 10's in my CRX in "all motor street" form, but I am still trying to decide between doing the big stroke B or a stroker H. As an engineer, cost is always an issue. I have to decide what is the most cost effective method to meet my goal.

 

Your best bet will be to go to Inline Racing and speak to Huy Tran. He is a specialist and has build b series stroker motors in the past. He is the best i know by far in your area. 1st 9 sec street honda from h-town amongst other fast cars he has build in the past.

 

Trust me when I say that a setup like that would not benefit from a 4.9 FD. I use a 4/78 FD on my 85x92 setup and the gears wind out wayyyy to fast for me to make good use of them. I am just in the process of changing back to a 4.4 FD with my EK9 gearbox.

 

You're probably right. I'm not sure why I put that in there, it might have been a typo and I was thinking 4.78 maybe. At any rate, a large displacement motor with lots of torque would certainly do quite well with 4.4 FD, especially on the street.

 

Take a look here.
http://www.ericksracing.com/Erick_s_...kits_s/867.htm
http://www.team4piston.com/crankshaftsB.html

 

87x95 is factory for an h23 motor, why would you go through all that trouble to get a smaller motor when you can just do it with a factory one. Just my opinion... It might cost a little more but in the long run you have a much better setup. If you go 2.5L H2b, you will have an even better setup than a stroked out 2.2L B series and still have all the gearing options you have with the B series setup... something to think about.

 

LOL it's funny how the OP is always praising this guy Huy, and then some random dude who joined this month with 2 posts from Canada says to go to him.

Hmmmmmm LOL

 

My 95 stroke wrist pin just got messup, not even 200 miles yet! this is a good idea of what people deal with when going big strokes on b series..

 

Does it matter if I have two post or 2000. I do know that Inline has built stroker motors in the past and I saw mikesrex being from that area so I advised him to go there. I had a fast DSM 10 years ago which was built by the same shop.

 

are you Huy's friend that he talks about from Canada? Not sure on the spelling, but would your name be Pfizer or something like that? I've known Huy for quite a few years now.

At the time of my OP I was considering building an all motor setup to go 10's, but now I'm going to focus more on building a turbo car lol. I have a mild all motor setup that I could throw in my CRX to crank out some 11 sec passes, but as you already know we've done that many times over.

 

Cool.Its a very small world. I had no idea that you know Tran. I just saw that you are from Port Arthur that why I referred you to him. All good if you are friends with Huy.

CRX is a very light car to begin with. I like B motors better that h22 but that my personal preference. I think with a 35r on pump gas you should be able to run high to mid 10's all day long.As it is you already have a sleeved b block and a gsr head.

 

I'm gonna go 9's with my lil turbo setup, should have my rex painted (Monte Carlo Blue, I bet you know that color hehe) and ready to go at IFO in the FIS class next time IFO has an event at Houston.

 

I know that color very well. Good old days. Good luck with the build.