Speedz

well, i've been taking welding at community college for a few quarters now.. i've been mess'n around with several different projects..
heres one i'm finishing up.. GSR flange/runners with 4.5" tube plenum.. i've got a bigass TB i'm gonna mount on it.. i might change my mind tho.. we'll see. i've still got some more grinding/sanding to do inside the runners. and then i'll weld on the rest of the tube.. i'll keep this updated.

accordepicenter

so that used to be a GSR intake mani and you chopped the plenum off correct? I think this is the same sort of thing jeff did on the twin turbo crx. Betcha its really cost effective

Speedz

yeah, just had the GSR IM sitting in my garage, bought some scrap tube, cut the runners at bout 8 inches, then put the flange/runners on a mill, turned the mill head 90 degrees, got a cutter set at 4.5" diameter (same diameter as the tube), and cut the radius into the runners for a perfect fit(length to the radius is 6"). took plasma cutter and cut the tube length wise.. tacked the half tube to the runners, then scribed the outside of each runner onto the tube half.. cut the tacks.. then took a pen and drew inside my scribe marks so i can cut with plasma cutter. then tacked on the runners again and started grinding to match the holes to the runners. then i V grooved the inside of each runner with the tube half.. so i would get good penetration when i welded the insides.. once the welding was done, i started grinding again and got it all nice.. the worse part of this job is the gsr IM flange and runners was used so they were "contaminated" .. i cleaned the ---- out of them.. hot tank and everything.. but still welding aluminum any contaminant will make welding a bitch.. the welding on the insides of the runners went alot better than the outside of the runners so i ground off the oustide welds so it wouldnt look bad LOL.. i'll post pics of it later when i get it all done.

Speedz

a little update, been working on it between other projects. getting closer to being done

Schister66

keep posting pics about this....i wanted to do either this or port my stock GSR manifold since its just sitting around collecting dust......how are you planning to hook up the sensors to it though??

FooK

i think you should make the cylinder 1 side of the plenum go even further past the last runner, so the air has somewhere to exercize.

Speedz

LOL ****,
thats there for plenum volume.

Schister66,
only sensors that will really need to be on there would be the intake air temp sensor and the intake air control valve, i havent decided where i'm going to put the IAT, the IACV i've got an idea how i wanna do it, but very hard to explain, it'll be in a somewhat "stock" location but i dont think i'll have it hooked to the throttle body.. too much work, i might use some kinda valve cover vent filter for the air coming in... its either that or not even having the iacv connected to the plenum

i'm going to use a GM LS1 73mm TB so i've gotta figure out what to do about the throttle linkage. it has a 5v reference voltage for the TPS so i just need to find a GM TPS plug and wire it into the harness.. crome itb tools allows for different tps voltage correction.. so if i have problems with the gm tps, that should solve it. (actually i've got my own rom custom coded for normal operation with only mods for tps correction. but the crome itb tps correction would work for someone else.

krazeteggie

edelbrock sells a 'mustang 75mm throttle body' that is setup for a honda's out of the box, for an extra $20 they even sell an adaptor plate that you could use for a flange. sweet work tho. i'm trying to decide on a manifold still.

Speedz

how much does it cost tho? i got my 73mm GM TB for a very reasonable price brand new.

98ctr

looks good, but you should try to see it it fits, it sure looks like it will hit the brake master.