i recently swapped in a 95 usdm gsr motor into my 93 hatch... the motor is internally stock with a skunk2 IM and a jdm dc 4-1 header the power is nice but i want to upgrade my trottlebody with a matching skunk2 unit... the options i have are going with a 60mm, 66mm, 68mm and a 70mm...my question is how do you know which one is right for your set-up and what will give you the most power??? sorry for the newb question but... i had to ask. TIA

 

i have a 68 form skunk....but bigger is better i would say

 

understandable bump for some more feedback

 

up again

 

i was told for my set-up the best gains i could see would come from a 68mm throttle body does anybody have this throttle body who could give me some info???

 

uupppp

 

Get a mustang 75mm from BBK for like $200 then port match that biatch.

 

i found a deal im gonna send my stock gsr tb to king motorsports and have them bore it out to 70mm

 

i hope if you are getting the T/B ported to 70mm, you are planning to get the I/M port matched also.

 

its going on a skunk2 IM

 

hate to say it but u will probably not have any noticable gains by increasing the size of ur throttle body. ur engine does not use enough air to need a bigger higher flowing tb. save ur money and use it elseware.

 

bigger throttle body will give you better throttle response. but to big and you'll loose power down low, and may only get good power up high in a short span between a few hundered rpm.

 

u are better off getting some itr cams and some cam gears or something. you will feel the gains over a throttle body

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fmrprojects &raquo;</TD></TR><TR><TD CLASS="quote">u are better off getting some itr cams and some cam gears or something. you will feel the gains over a throttle body</TD></TR></TABLE>

I agree. However, if you plan on getting everything they will all compliment each other eventually.

 

i dont see any point in getting a throttle body opening bigger than your im opening. before you send it to king, there is a guy on here who does it for 100.00. king is 150.00 i think.

 

I agree. Dont spend more money on boring it out. Use it for other performance parts. 68mm shuld be fine for a NA engine.

 

Skunk2 is ported at 62mm... I'd go with 62mm from BBK and call it a day. I'd do it if their TB works for autos

 

Skunk2 is ported at 62mm

 

JG 65mm is fine for me. I get instant response.

 

thanx for the responses guys i think im gonna hold off on the tb and go with something else... just not sure what yet