Originally Posted by 32krazy!
bob the n/a runs a 67 and the s/c 3.2 uses the 74mm t/b. a host of s/c m/b cars are using the sl55 80mm t/b or the 82 v12 t/b with a few mods to get it to work. not very cheap
Thanks Steve. I was reading about guys also trying to use the Audi TB. The Hemi 80mm can be bouught for less than $100 but not sure if it could work. I look very similar to the MB TB. I will probably go with Max Bore and and do the gringd mod. Here some Math to back up this mod from the Nasa Engineer who came up with it.
Here are the calculation courtesy of Exotic_metal55
74 mm = 2.9314 dia. = 6.749 sq. in. 9 mm (.3543 dia) shaft x 2.931" long = 1.0385 sq. in. 5mm (.1969 dia) x 2.931 = .577 So 6.749 - the difference in a 9 mm and 5 mm shaft is .4615 sq. in. Equivalent flow area = 6.2875 sq. in = 2.8294 dia. = 71.866 mm.
78 mm = 3.0709 dia = 7.4065 sq. in. - 9 mm (.3543 dia) x 78 mm (3.0709) long = 1.088 sq. in. = 6.3185 sq. in. = 72.044 mm equivalent.
Math can't lie.
Considering this is a relatively cheap/free mod, the benefits were incredible.
Right of the bat the throttle is much more responsive in terms of power the car feels a lot stronger at WOT. In a few weeks i will dyno the car and let you all know the outcome. My butt dyno definitely tells me i have gain a few hp (for free).
Once again thank you Exotic_metal55. It is because of member like him the automotive enthusiast community / forums are an interesting place.