is there anything that would make a race ported head that would make it unstreetable or not recomender for daily driven use. is the valve seat contact patch much smaller than a good street valve job? would it burn the seat if driven daily?

 

the only reason why we dont recommend race port work for a normal daily driver is because the powerband is more for high rpm,theres not as much low end power and might be a little harder to drive in stop and go driving.Other than that,if you can stand the lack of low end power than there's no reason why you couldnt drive with a full race ported head everyday.Some people may have different designed valve seats/seat cuts that daily driving would be too harsh on.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fearless_dsm &raquo;</TD></TR><TR><TD CLASS="quote">Some people may have different designed valve seats/seat cuts that daily driving would be too harsh on.</TD></TR></TABLE>

could you elaborate on this. im not sure i understand how valve seats could effect anyting? maybe im just missing something.

 

they dont affect drivability,but some different seat cuts might leave the seat a little too thin,which is great for flow,but having the valve smash on them for thousands of miles might cause them to break easier than stock.We dont do anything out of the odinary on most of our port jobs to the seats,besides having a 45 degree angle cut into them...which would be ok for daily driving.

 

ok. i see what your saying now. thanks.

 

I can think of at least 2 people off the top of myhead that are driving around everyday with Square port heads. That type of head loses a little low end but rips way up top. I guess its really all about what you want in a street car. If you are like me and dont want to have to rev to the moon to make power than maybe a more subtle head will be your best bet.

Im going to be building a large stroke/long rod motor soon and will be working with a few different seasoned professionals to come up with the right head configuration for me. Generally, low r/s ratio motors like a slightly larger port where as the higher revving smaller stroke motors like a meteocre port (according to JG).

Best bet for you is to do a little homework, ask a few that have a lot of experience with head work in both street and full race aps... Picking someones brain never hurt anybody

 

i was hopping i may get some input from a few head porters. since im running a 2.0lt block loosing a bit of tq wouldnt be the end of the world.

 

We port all of our own heads,so im telling you from my experience.You wont lose peak torque,you'll just lose low end torque,mostly below a vtec engine's powerband anyways.

 

Peak torque will increase(or should if the head porter is decent),Just make sure the head porter matches the port job with youre cams and with the power band you want,and you wont lose much low end.

 

sorry fearless dsm i wasnt saying you were not a head porter or qualified i ment multipule head porters including you .thankyou very much for your replys

 

its cool...if you need anymore help or have anymore questions,feel free to pm me.Thanks.