64mm Throttle Body
#121
2006+ S2000's should have a DWB 64mm version. The pics I have seen of them look promising. Sounds like lots of owners don't like the DBW setup and swap them out for a cable version RSX-S throttle body, maybe that means there are some good deals to be had?
How sweet would that be if it uses the same voltage, bolt pattern and plugs.
How sweet would that be if it uses the same voltage, bolt pattern and plugs.
#124
there is room for that under the fit hood. i think it is a 66mm tb. looks like cooling nipples and dbw plug are similar but do they send the same signals?
#128
I'm happy to see that you're thinking about TB and its importance.
This document will help you to understand more...
http://www.vems.hu/files/MembersPage...n/gaspjeld.pdf
I'm sure that at the end someone will change its stock TB!!!
This document will help you to understand more...
http://www.vems.hu/files/MembersPage...n/gaspjeld.pdf
I'm sure that at the end someone will change its stock TB!!!
#129
I'm happy to see that you're thinking about TB and its importance.
This document will help you to understand more...
http://www.vems.hu/files/MembersPage...n/gaspjeld.pdf
I'm sure that at the end someone will change its stock TB!!!
This document will help you to understand more...
http://www.vems.hu/files/MembersPage...n/gaspjeld.pdf
I'm sure that at the end someone will change its stock TB!!!
#130
So I wasn't able to bolt in the Rev2 manifold today. However I got 2 dimensions to report;
Air intake side of the TB measured out to 64mm, it clearly gets smaller inside of course.
The WR manifold measured out to 55mm,
Will get the outlet side of the TB measured up once I have it apart either tomorrow or on Tuesday.
So somebody was saying the new 09's have a 52mm TB? Sounds promising!
Air intake side of the TB measured out to 64mm, it clearly gets smaller inside of course.
The WR manifold measured out to 55mm,
Will get the outlet side of the TB measured up once I have it apart either tomorrow or on Tuesday.
So somebody was saying the new 09's have a 52mm TB? Sounds promising!
#133
#134
tb boring is good if you want to still pass emissions and what not, but the gains are very minimal. I would gladly swap my tb's every 2 years if I could have a 60 mm tb that would have a 53mm manifold opening and actually make about 3 hp for 300 dollars instead of 1/2 hp for the 150 it would cost to rebore the stock one.
#135
Confirmed today that the inside dia of the TB on the manifold side is also 55mm. So the only restriction is the actual butterfly dia itself which I assume is 45mm.
Would be interesting if the new Fit has a butterfly of 52mm and the same inlet and outlet dia. Would be a direct bolt in then
Would be interesting if the new Fit has a butterfly of 52mm and the same inlet and outlet dia. Would be a direct bolt in then
#137
Confirmed today that the inside dia of the TB on the manifold side is also 55mm. So the only restriction is the actual butterfly dia itself which I assume is 45mm.
Would be interesting if the new Fit has a butterfly of 52mm and the same inlet and outlet dia. Would be a direct bolt in then
Would be interesting if the new Fit has a butterfly of 52mm and the same inlet and outlet dia. Would be a direct bolt in then
Then you need upgrade....
#140
A 64 mm Throttle body would definitely be too big for a 1.5l engine... I used to mod many Neons in the past and i can say for sure than swapping a 49mm Mtx Tb for an 52mm ATX Tb on a neon gives more or less 6 to 10Whp depending on mods...
found this on the web a long time ago... sorry, it's from a neon forum but it should apply on all engines!!
Gary Howell wrote:
"49mm TB flows 252 cfm
52mm TB flows 283 cfm
55mm TB flows 317 cfm
60mm TB flows 377 cfm
At 8200 RPM (Max RPM of a DOHC Neon with AF\X-Race V1 PCM) a 122 cubic inch engine will need 290 cfm at 100% volumetric effiency, using the formula ((Max RPM/2)*Displacement)/1728. Rule of thumb is to go 10% over because a naturally aspirated engine can go above 100% volumetric efficiency because of cam overlap, header design, etc. Go above that and you kill low end because of reduced velocity, go below that you starve the engine for air at top end. 110% is volumetric efficiency is 319 cfm."
Hope this helps!!
Marko!!
found this on the web a long time ago... sorry, it's from a neon forum but it should apply on all engines!!
Gary Howell wrote:
"49mm TB flows 252 cfm
52mm TB flows 283 cfm
55mm TB flows 317 cfm
60mm TB flows 377 cfm
At 8200 RPM (Max RPM of a DOHC Neon with AF\X-Race V1 PCM) a 122 cubic inch engine will need 290 cfm at 100% volumetric effiency, using the formula ((Max RPM/2)*Displacement)/1728. Rule of thumb is to go 10% over because a naturally aspirated engine can go above 100% volumetric efficiency because of cam overlap, header design, etc. Go above that and you kill low end because of reduced velocity, go below that you starve the engine for air at top end. 110% is volumetric efficiency is 319 cfm."
Hope this helps!!
Marko!!