| Author | Message | ||
     Whosbeenfartin |
Will XB cylinders work with stock TSTORM X1 heads and pistons with fresh rings. I have the opportunity to buy a set of basically new Xb12s jugs for real cheap. A guy I work with has a set for sale from a bike that got an overbore kit when it was basically new. I know that there will be no performance advantage (except maybe cooling), but for the price (cheap) and due to the fact that I have read about issues with the 99 X1 cyl liners moving in the bores it seems like a good deal. Its either this or a 1250 Kit (Message edited by whosbeenfartin on October 18, 2007) | ||
| Oldog |
1250 1250 1250 1250 1250 1250 1250 $00.02 | ||
| Tattoodnscrewd |
Add XB heads and XB9 pistons and you will get just as much if not more than a 1250 ..... the cylinders will not get you a whole lot of anything by themselves ... XB top with XB 9 pistons will pull up to 108whp .. just a 1250 will not do that .. (without a lot of headwork) Thats my half a cent ... | ||
| Whosbeenfartin |
I realize I could use all XB parts, but it seems like it would be more cost effective to get a 1250 kit (or re ring my stock pistons and use the XB cylinders), and get stage 2 work done on the heads. | ||
| Buellistic |
Isn't RETRO-FITTING wonderful !!! | ||
| Nevrenuf |
you mean i could have used xb cylinders and pistons on my m2. (Message edited by nevrenuf on October 19, 2007) | ||
| Oldog |
I have read about issues with the 99 X1 cyl liners moving in the bores it seems like a good deal. If your not having issues I would not change them out, OTOH if there are issues and they are cheaper and the correct size for your slugs re-ring & go, theres no discernable advantage to having XB jugs other wise if you want HP, XB topend sounds like the ticket... its your $$$$ Hey Tat - what cams were run in that set up? (Message edited by oldog on October 19, 2007) | ||
| Buellistic |
XB cylinders and heads have more cooling fins !!! | ||
| Tattoodnscrewd |
Oldog .. stock lightning cams ... no need to go any hotter .. big gain while keeping a nice flat power curve through all RPM's .. not peaky or only high RPM power ... Fartin ... it actually wouldn't be cost effective to go that route .. it would cost you more to have the headwork done to your heads on top of the 1250 kit .. you would actually spend more for not much more of a gain than the XB top - the XB setup requires no machine work or head work. .. bolt on and go .. that IMO is much more cost effective (since you can get the XB cylinders cheap - but again - not necessary to use the XB cylinders - yes more cooling and more cosmetically appealing with XB heads) I also don't believe that stage 2 headwork on stock lightning or T-storm heads will be as good as the XB head out of the box - now if you did stage 2 work to XB heads .. that would be nice ! But again - you mentioned cost effective .. To answer your original question - will they work with your heads ... yes bore is identical between the two - I t will look a little silly though with stock heads and XB cylinders - the XB cylinders appear much larger because of the extra cooling fins .. will look a little out of proportion .. one other note - using XB parts on a tuber will make a noisier motor - those extra cooling fins resonate engine noise - on an XB, the motor is buried behind/underneath the frame, so noise is muffled some - wide open on a tuber .. I thought something was wrong with mine but it's just because of the XB parts that it's a little louder. Nevrenuf ... you could have ditched almost the entire top of the M2 - you would have reused pushrods/ pushrod tubes, rockers and rocker shafts ...the rest would be XB (the key is the XB 9 pistons .... ) (Message edited by tattoodnscrewd on October 19, 2007) (Message edited by tattoodnscrewd on October 19, 2007) | ||
| Xldevil |
Tattoo,in the old days of motorcycling, two stroke riders made small gaps in the fins to avoid annoying fin swing.Maybe this would help on XB cylinders too Ralph (Message edited by xldevil on October 19, 2007) | ||
| Djkaplan |
I remember Bombardier 2-stroke engines in CanAms had so much rubber stuffed into the cooling fins to keep them from amplifying mechanical noise, they were referred to as 'rubber cooled'. | ||
| Jayvee |
Can you elaborate more on this: "the key is the XB 9 pistons" How are they different, that makes them the key? Domed-top, flat, valve pockets, lighter, thinner, what? | ||
| Whosbeenfartin |
what is the resulting compression when using XB9 pistons with an XB top end on a 1200 bottom end?? I don't want something not California premium (91 octane) freindly | ||
| Tattoodnscrewd |
Interesting info XL and Dj .. didn't know that .. Jayvee ... I should have said the XB heads and XB9 pistons are the key components .. XB9 pistons make for higher compression - they are domed ... stock XB12 pistons aren't going to do anything over the stock t-storm pistons .. I am not 100% sure of the compression with them, I think its around 12:1 - 12.5:1 - I do run on pump gas .. between 91-93 octane - whatever is available where I fill up | ||
| Xldevil |
A numeric pressure of 12:1, maybe 12.5:1 results in a high,not to say very high cranking pressure, afaik. What squish did you set to avoid detonation? .025" or less? Ralph |
