Porting Cases

[cdwood37]

I have a 421 cub and was wondering if i should have ported the cases before i put it all together, does this give you more power or what? If so how do you do it?

[rocketboy]

my opinion is i that i wouldnt waste my time doing that ,anytime you start doing this yo u will weaken the base of a high horspeower application engine only to make 1 or 2 more peak hp . theres better mods for the money IMO the cylinder port durations is where the power is made friend regardless of what people will tel l you ....my 2 cents :baseballcap_blue:

[wesw]

i think for the cub your are suppose to port the cases for the transfers or something.

 

no positive on it but i was told it was needed to be done.

[BigRed350x]

I never ported my cases and mine runs fine. Don't waste your time. Its only needed with the really big engines and aftermarket cylinders like TRex cylinders.

[2003LimitedBanshee]

my opinion is i that i wouldnt waste my time doing that ,anytime you start doing this yo u will weaken the base of a high horspeower application engine only to make 1 or 2 more peak hp . theres better mods for the money IMO the cylinder port durations is where the power is made friend regardless of what people will tel l you ....my 2 cents :baseballcap_blue:

 

I don't mean to be an ass at all, and I don't want to hijack this thread, but I don't suppose you would be willing to share some insight on port durations that you've found success with. (PM?) I will be porting my cylinders soon (using RaceLogic stage III's as a base, but some alterations to the standard), and would really love to hear what works. I've done quite a bit of reading/research on port-time area's, exhaust durations, blowdown, etc. so the concepts are making sense, but haven't ported a shee before, so don't know what kind of figures they like. Thanks! (sorry? in case I hijacked).

[addicted]

I have a 421 cub and was wondering if i should have ported the cases before i put it all together, does this give you more power or what? If so how do you do it?

When I did my cheetah they told me I had to port the cases if the cylinders are tunnel ported.

[BigRed350x]

I don't mean to be an ass at all, and I don't want to hijack this thread, but I don't suppose you would be willing to share some insight on port durations that you've found success with. (PM?) I will be porting my cylinders soon (using RaceLogic stage III's as a base, but some alterations to the standard), and would really love to hear what works. I've done quite a bit of reading/research on port-time area's, exhaust durations, blowdown, etc. so the concepts are making sense, but haven't ported a shee before, so don't know what kind of figures they like. Thanks! (sorry? in case I hijacked).

 

Head over to Planet Sand and do some research, there are some porting guru's over there. I've learned a lot from them.