http://rain.prohosting.com/imwhom/junk/inj/


I was pulling the plenum to swap injectors anyway, so i went ahead and siamesed the plenum and through the flange on the stock runners, so maybe an inch worth of siamesing vs. stock, plus i radiused everything up better than i had it already. (Yes i was really bored)
It still runs, feels really good, but it could be the cold air too.

------------------
Ed Maher - Moderator @ The TPI & Carb Boards
92 Z28 Convertible - Quasar blue / Tan top
305 TPI A4 2.73 - 14.8 @ 93.1
Stock except ported plenum and dual cats
-=ICON Motorsports=-

- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die

 

haha, i thought i was the only one who used the dishwasher to clean off parts!

 

Interesting ...

I can't imagine explaining to my wife when she found car parts in the dishwasher.

I had often thought about putting an old dishwasher in the garage!

I plan on getting some SLP runners. For now, I could do the plenum port like you did, and then be ready for the runners.

Mark.
PS. You DO have too much time!

 

I done the same to my runners and plenum. It knocked off a tenth on my ET and added about 2 mph in the 1.8th.

------------------
91 Z28 305 TPI
single 3"flowmaster
ported plenum,siemesed runners,
gutted airbox,
160 robertshaw thermo
273 gears,auto
9.47 1/8th mile
on goodyear eagles

 

www.geocities.com/softtailduece01

 

I have got to break down and do this stuff.

 

If someone wants I will siamese port there Plenum for them! Best kick in the pants mod to do and keep the car still stock...Just PM me... I did my runners tha same way!! I didnt know others were doin it! I really want to Have true siamesed runners

 

wow back from the grave. the plenum mod is a good one.

 

Yeah, but is the slight siamesing of the stock runners worth doing? (or) Should I just smooth out the step/mismatch in the runners?

 

wont hurt to siamese em like ed did. every little bit counts.

 

Just Siamese it!! seriously its less work then trying to individually grind down each little Box between each runner port. Plus make sure you grind down those boxes up front by the TB ports also. Then once u have siamese portsed the plpenum radius the runners also! IMO I dont think you would notice all that much if u just cleared those boxes out opposed to siamesing. I know that I noticed alot of gain in throttle responce and top end(not much but like said "every little bit helps"

Jason