BoostedK20 Chat!

[Spaz]

my car bit me last night wrenching

[Lilwhit14]

Hey guys, I have some deatchwerks 600cc injectors I'm trying to sell. Only have 15,000 miles on them. Anyone interested?

[SAX JONZ]

Damn! Now that is good time!

Well back from the track this weekend car went 11.0@ 131 mph had a great weekend nothing broke good time cant wait for 2012

[aLmk]

Mods: I have put this here as this is generally only relevant to turbocharged Si's, if you feel it must be moved, go ahead.

I am a bit torn between what to do for my 'built' transmission to go along with my built motor and turbo setup. The car is a 2007 civic si with a GT3076 turbo setup on a stock motor, will be making about 450whp once tuned. This winter a mildly built motor (just pistons, rods, valvetrain) will be going in along with MAYBE upgrading to a GT35. When I swap this motor in (if my current trans doesn't break sooner) I will be putting in a 'built' trans that will consist of treated stock gears. I currently have a base rsx 5 speed gear set without the 4.3 FD and I have gears 3-6 that are reusable from my first z3 transmission (second gear as well as counter shaft, main shaft, and FD are not reusable) all sitting in my basement ready to be sent off for treatment, but to use either I need to at the least order a few bearings and a new FD. The two setups I have narrowed it down to are using the base rsx 5 speed gear set with a new z3 counter shaft and 4.7 FD (I will also throw my 6th gear on as well for highway cruising) or a 'hybrid' between the base rsx 5 speed and my old z3 trans consisting of the base counter and main shaft, so I would need a 4.3 FD, and I would use gears 3,4,5, and 6 from my old z3 transmission. Reason I am considering the latter option is because at 450-550whp(if I were to upgrade to a 35, I'd be closer to the latter) I will not need 4th gear to go to 140+mph as I will not trap that fast in a 1/4 mile. The 'hybrid' transmission would allow me to hit around 125mph in 4th gear at rev limit and that to me sounds like it would be much closer to my actual trap speed at this power level in this chassis. The odd thing about using the 'hybrid' transmission will be the spacing between 2nd and 3rd gear. Shifting at rev limit in second I will land at nearly 7k rpm in third gear, which may or may not be really weird. Below is a comparison of the two gear sets, the first compares the stock transmission (left) with the 'hybrid' transmission (right), the second compares the stock transmission (left) with the base 5 speed with 4.7 FD (right). LMK what your thoughts are as I do not have a whole lot of experience with gears other than the stock z3 gears, and maybe some of you could shed some experience for me that would help me make my decision.

[ksboi]

Drag race 5spd I would do hybrid. I was talking about just using ep3 1-4 and si 5/6.

[aLmk]

What do you guys think about this:


It's some scarring I noticed on the counter shaft from the 5 speed gear set I have. Do you think this is reusable?

[PetefromtheStreets]

Drag race 5spd I would do hybrid. I was talking about just using ep3 1-4 and si 5/6.

But which FD?

s4 IG-petefromthestreets

[ksboi]

But which FD?

s4 IG-petefromthestreets

I have not thought that part out. I know people make aftermarket ones or just use stock FD. I am little worried about the LSD.

[Spaz]

What do you guys think about this:


It's some scarring I noticed on the counter shaft from the 5 speed gear set I have. Do you think this is reusable?

Me personally would not reuse it.

[aLmk]

Me personally would not reuse it.

Ya thanks for the input, I decided yesterday I wouldn't reuse it. Already ordered a 4.3 FD with counter shaft from kseries parts.