# ls/vtec build question? **URL:** https://forums.speedlife.net/t/ls-vtec-build-question/194606 **Category:** PittSpeed Automotive **Created:** [January 7, 2008, 10:40am UTC](https://forums.speedlife.net/t/ls-vtec-build-question/194606 "2008-01-07T10:40:15Z") **Posts on this page:** 1 **Showing post:** 40
### Author: ![wrayzor](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/wrayzor/32/6021_2.png) [@wrayzor](https://forums.speedlife.net/u/wrayzor) #### Post date: [January 11, 2008, 5:50pm UTC](https://forums.speedlife.net/t/ls-vtec-build-question/194606/40 "2008-01-11T17:50:05Z")
> [@Watch Crew: What to buy?](https://forums.speedlife.net/t/watch-crew-what-to-buy/34295/73): > > Unless he already has your pistons he should not be boring/honing as the particular pistons you end up getting may have recommended piston-wall clearance specs that differ from what your bore sizing was honed to. Otherwise you may end up with pistons that are too small and have too much piston-wall gap (in which case you’ll need to get other pistons) or else not enough gap (in which case you will need to pay to have the cylinders rebored/honed). to add to steve’s comment, different pistons swell different when they heat up that’s why there may be different clearances for different types of pistons…like for examples my endyn pistons say that i need like .029-.03\* piston to wall clearnace even though oem specs say that .010-.030 is within spec and like steve said your machinist should be boring/honing your cylinders to fit your pistons not the other way around. > [@Well these fit alot better.....](https://forums.speedlife.net/t/well-these-fit-alot-better/34312/13): > > ummm not to be a dick here but dont you think you shouldve have done a lil more research before you started trying to build a motor, and claiming all these ridiculous hp numbers :bash: thats why here created a thread jackass so he can learn…ignore this ass bag ^^ --- _[View the full topic](https://forums.speedlife.net/t/ls-vtec-build-question/194606)._