+8mm crank

[1badazz_700r]

Ok, with winter approaching my wheels start spinning Is the 8mm stroker crank drop in or do the cases need bored? How hard is it to split the cases and do this myself. Iam mechanically inclined. already had this motor apart to install new piston etc.and worked on cars also since i was 13yrs old. Im thinking of +8mm crank and 105mm bore.already have the other essentials. X-4 cam,+2tb,barkers,etc. how reliable is this combo for the occasional drag races and trail riding? what kinda hp could i expect from this? Thanks in advance and sorry for so many questions at once

[exentix]

so much for not likeing down time 

[SUB454]

My +8mm crank, 105mm bore has run flawless at 14:1 compression.

[preddy08]

If I remember right I think you can go to a +15 with out trenching the cases.

[1badazz_700r]

I thought i read on the old forum a long time ago that +8mm was the biggest without boring Just not real sure.The downtime dont really matter i guess when the snow starts flying,cause if i really want to ride i still have the arctic cat 400 4x4 and i have a key for the neighbors shed. and his raptor 350 oh snap

[1badazz_700r]

would it be worth it just to bore it to 105.5mm and more compression and be done with it. this would be alot quicker and cheaper route because i wont have the money for a +6 swinger then

[preddy08]

Your JE piston wont work with the big stroker cranks. You'll have to buy a new one. While your at it you might as well go big on compression too.

[Troy]

Your piston will work if the rod is shortened by 4mm with a plus 8 crank.  I agree with Preddy, get more compression while you're at it

[1badazz_700r]

Ohi definatly will get more compression. But what do you think about just boring to 105.5mm with 14:1?

[RaptorRandy]

I  myself wouldn't reccomend going over 105mm with the OEM cylinder. If you have your heart set on 105.5 I'd highly reccomend the CP aftermarket cylinder.

[1badazz_700r]

I have no problem settling for a 105mm do you think this would be as good as boring and stroking? or should i go all out and do both? I already think i need a lock up clutch cause my stocker dont like the 1/4mile drag so either way the clutch is a must. maybe when i get a good clutch in there i will notice a big differance in performance. cause in my video's at the drag strip you can actually here it slip after shifting. This has to be hurting to a certain degree

[RaptorRandy]

Well, I like the strokers myself....I guarantee you won't be disapointed if you go with an 8mil stroke and a 105mm bore. It has proven to be a damn good combination IMHO   

[White Rider]

Your JE piston wont work with the big stroker cranks. You'll have to buy a new one. While your at it you might as well go big on compression too.

Why is that preddy?
I have an 11.25mm stroker in mine with a JE 11:1 comp piston running an actual 12:1 comp with custom cut eyebrowns in it. And have had no problems yet. I also heard that the JE was not a real tough piston but i was wondering what your thoughts on it are....

[preddy08]

Your JE piston wont work with the big stroker cranks. You'll have to buy a new one. While your at it you might as well go big on compression too.

Why is that preddy?
I have an 11.25mm stroker in mine with a JE 11:1 comp piston running an actual 12:1 comp with custom cut eyebrowns in it. And have had no problems yet. I also heard that the JE was not a real tough piston but i was wondering what your thoughts on it are....

Don't you have to buy a piston made for the larger stroker cranks? 90% sure you do, for corrected pin heigth If you are spending all that money on the high dollar crank you might as well get a GOOD CP piston and up the compression. JE and Weiscos are decent for an off the shelf piston, but when you are in that deep you might as well go all the way.

[White Rider]

Well i guess im the other 10%  I built a cylinder riser to fit my crank and only flycut deeper eyebrown in my piston that i have had.