.080 over

[trx450r214]

If i punch this cylinder out .080 over will it make a signifigant difference from stock? I REALIZE THAT THERE WILL BE NO MORE ROOM TO BORE IT WHEN IT BLOWS UP. I am wondering if theres any power gain, any at all that anyone has noticed. My plan is .080 over, v force3 reeds, jetted carb, and full fmf system, no more no less. Please let me know your thoughts on boring.

Thanks
Dylan

 

[scotj77]

No you will gain like 1 or 2 horse power. waiste of a perfectly good cylinder. spend some cash and get it ported or the head modified. or both

 

[blasterdemon7]

There is no real power gain that you will feel. It's just wasting cylinder life and putting your motor at a higher risk of running to hot . Don't do it.

 

[mud runner]

agreed do what scot said head mod and ported

 

[blasterBruce]

4th In line saying Do not Do it , It's not worth the Extra bore lives to add 1-2 Hp , A Redesigned head or Slight port work will help Allot more than a Bigger bore !

 

[Myblasterisblue]

Do this... Get a ported big bore kit with.a redesigned head. Or send your top end to ken oconnor and he will make it go fast

 

[Braaaptor]

Boring is a waste unless you need to do it to remove excessive wear or damage to the cylinder. However, having your cylinder ported and head modified will give you a big increase in power output.

 

[motoman159]

Do this... Get a ported big bore kit with.a redesigned head. Or send your top end to ken oconnor and he will make it go fast

x2 he knows how to make them go

 

[trx450r214]

Where can i get ahold of ken? Also has anyone ported their bike themself?

 

[slickerthanyou]

Phone: 860-230-5003

E Mail: kenoconnor07@aol.com

 

[blasterBruce]

Where can i get ahold of ken? Also has anyone ported their bike themself?

Yes allot of people do there own Port work , I have done it on Over a Half dozen Sbc 350 and Sbf 302 heads ,as well as My DIY port Cylinder I have Sitting here

 

[Myblasterisblue]

index theres kens website. Sorry. Didnt realize slick already posted it

 

[Blaaster]

If i punch this cylinder out .080 over will it make a signifigant difference from stock? I REALIZE THAT THERE WILL BE NO MORE ROOM TO BORE IT WHEN IT BLOWS UP. I am wondering if theres any power gain, any at all that anyone has noticed. My plan is .080 over, v force3 reeds, jetted carb, and full fmf system, no more no less. Please let me know your thoughts on boring.

Thanks
Dylan

Boring out a stock cylinder to its limits is a sheer waste of money, the power gain is insignificant.

As others have stated porting and head rechambering is a way to get more power.

Re consider your choice of pipe, there are differences in pipes, some bring the power on early, others late.

Where and what type or riding will you be doing, this should influence your choice of pipe.

 

[trx450r214]

hey scotj, how long is your bike stretched? i like it, ill pry make my own swing arm but im not sure how long to make it.

 

[trx450r214]

i would port it myself if i knew EXACTLY what to trim/shave/cut. but i dont. does anyone have like a step by step for it? what pipe would you recomend for blasting up the side of a coal hill? i see mostly FMFs up there and some toomeys