big bore wiseco pistons"WTF"

[pondtunes]

If you're running 93 octane and have 140 psi compression it probably detonated to death... I believe anything over 120psi is race gas territory!

[J-Madd]

You can't just go by PSI; you have to calculate compression ratio; which depends on many factors, especially the exhaust port height. I ran a stock unported cylinder with +5 timing and 150 psi on pump gas for a long time. No deto. You may still be right about the need for race gas on his motor, though. His compression ratio could be high.

[Nutwood 472]

Send Andy your dome too or both of them and mark which one was the broken side.

 

 

yep,I'm going to send him the domes,pistons and cylinders and see if he wants the cdi to and I'll keep you guys posted on what is going on with it,thanks again

[fastquad02blaster]

My vote is on detonation. This happened to my truck(too much timing, not enough octane).

[crazycanuck]

Not trying to be a dick, but Im curous as to why you built a pump gas super cub??? Couldnt you reach the same hp with a regular cub??? and the pistons would be cheaper.....IMO

[Nutwood 472]

Not trying to be a dick, but Im curous as to why you built a pump gas super cub??? Couldnt you reach the same hp with a regular cub??? and the pistons would be cheaper.....IMO

 

 

My cases were already bored out for a 472 t-rex set up I had previously and had nothing but problems with their special head that only fits the t-rex and it was a motor package I bought off ebay and a good deal that went real bad real quick and turns out that I bought their first prototype when they design the t-rex,10 year old cylinders,never been ran,so when I installed them.To my surprise the power vavle jacket the slide operates in had a hair line crack'to much machineing and was filling exhuast up with fluid and theres a bunch more to the story between the shop in west palm beach,fl and dasa racing,both shitty shops in my book and nothing but a money losing freaking nitemare for me ,then hooked up with M&M ATV,Going to send Andy ever thing and cdi,so he'll get it figured out,as far as the 472cc,since I already had big bore pipes and wanting something different and a buddy of mine has a trinity 421 cub and my 472 is a beast comepared to his 421 and I know they are both capable of the same hp and everything,but like I said,just wanted to build something different,and of course you live and learn when you own a banshee,lol

[crazycanuck]

My cases were already bored out for a 472 t-rex set up I had previously and had nothing but problems with their special head that only fits the t-rex and it was a motor package I bought off ebay and a good deal that went real bad real quick and turns out that I bought their first prototype when they design the t-rex,10 year old cylinders,never been ran,so when I installed them.To my surprise the power vavle jacket the slide operates in had a hair line crack'to much machineing and was filling exhuast up with fluid and theres a bunch more to the story between the shop in west palm beach,fl and dasa racing,both shitty shops in my book and nothing but a money losing freaking nitemare for me ,then hooked up with M&M ATV,Going to send Andy ever thing and cdi,so he'll get it figured out,as far as the 472cc,since I already had big bore pipes and wanting something different and a buddy of mine has a trinity 421 cub and my 472 is a beast comepared to his 421 and I know they are both capable of the same hp and everything,but like I said,just wanted to build something different,and of course you live and learn when you own a banshee,lol

 

Fair enough lol, My NEW override in my new motor crapped out yesterday so i can sorta feel ur pain......