4mill stock cylinder drag port with BB pipe?

[bansheeqc]

Anyone have any information about use of big bore OOF pipe on a 4mill stk cylinder drag ported engine on alky with 39pwk???

 

I actually a guy i know want to sell CPI big bore small flange OOF drag pipe chromed.

 

 

Do you think this pipe produce good power on a 4mill small bore motor on alky???

 

 

thank you guys!!!

 

bansheeqc

[kawiking]

i know fouledout421,badassbanshee,austin oneal run bb oof pipes on their 4 mills... but they are cubs. and their bikes are drag bikes.

unless ur just drag racing i d say no... i have a set of sb grr oof and bb shear oof s for my 421.... i ll prob just run the sb's... might try the bb's.. but i heard if u get off the pipe u cant get back in it.

 

for a stock cyln bike.. id say no.. stay with small bore pipes. im sure the others will chime in.

[devin4491]

but i heard if u get off the pipe u cant get back in it.

explain what that means... cuz im wondering the same thing as him

Edited January 14, 2009 by devin4491

[Blewbyu]

I have run a set of bb on my 4mill stock cylinder bike, but with 34pjs. I still ran consistant 4.3s which are the same times I was running with the small bores I normally ran. If I were you and had the choice, id run small bores. But if you could get a killer deal on the big bores, id say run em.

 

He means if the motor bogs or you let off and fall in rpms, it will take longer for the powerband to kick in.

[devin4491]

Ooo... ok thanks

[2slow350]

I would prolly call some builders like RDZ Racing that build fast stock cylinders or your builder and see what they would recommend.. Jmo

[njbanshee]

I run sb on my 421

[bansheeqc]

Thank everyone for feedback and information...

 

I probably stay with small bore pipe

 

bansheeqc