C4 Auto Into Nissan

[AWD2Go]

I know what you're saying mate. A good trick is to find someone that doesn't call themselves an expert but lots of other people do.

Yeah I know what you mean, unless anyone comes up with a really strong arguement, my gut feeling says I should go with Fred.

Laws of average says that you have to eventually get something done right first time

[WHITER33GTS-T]

When when when when?!?!? I'm dying to see the cars full potential

Im still slack. Been spending money on my house.....

[WHITER33GTS-T]

How much power will be lost from a built up auto?

[Dj laBBy]

Hey am in the process of getting a built jatco box, the 4nz one from a VLT, from Wollongong auto's

I came to this conclusion after doing soooooooo much research, from power handling to drivability to how easily it can be removed and replaced in the car and to top it all off, how much i don't have to change.

A few companys are doing the RE401 box from the rb25, s3 r31 and even subaru(yes they have almost identical, though its got a transfer case) BMS autos in brookvale, wollongong auto's, and MV auto's. To do this box up to cope with 1000hp, with everything topnotch, 4k plus converter(little too pricey for me) but tony rigoli's subaru doing 8's i think it can handle the power. There is even a skyline in the states with this box doing 8.2 or something like that.

Ok i had the option of going a Powerglide, as i had the conversion already, same as trimatic, though i didn't want to go 2 speed, great on the strip, but not as good on the street.

Next was Jatco box from the early skyline and VLT's. They have made these things tough, bloody tough. Have heard of rotor guys putting them behind 700hp rotors and pulling 8's in them. Have heard that they can handle 500rwkw. Those are big numbers, they can have a tendency to twist, but Keas and a few others are using big, thick sumps, which acts as a strength member.

Ok the last jatco i was talking about was the 3 spd. I have gone for the 4spd option which can only handle 350rwkw. Because there's a couple of parts internal, i think its the overdrive, that just can't take the abuse, even with billet servo's and the like. Plus the early skylines came out with them so for me it is a straight swap. Oh the 4spd, someone in melb has just pulled off a 10.2 quater in a VL. So that should give you some indication they are still good.

Regards to loss of power?? Its really hard to equate. Yes you lose power, but you gain torque, serious amounts.

The powerglide takes less power due simply to less moving parts, then trimatic, then C4 and everything else.

TCE make the best converters, hands down, but i can't justify spending 1400 on a converter when Dominator, who are still pretty god damn good, are only costing me around 600 for a converter to go behind a 800-1000hp motor.

So for the 4spd jatco plus converter its all about 3800. That includes transbrake, the lot!!

For a C4, which are a little bulky(for me) with transbrake, plus TCE converter plus tailshaft mod, plus speed pickup/cable plus mods to the standard shifter(if you want to run a standard) or B&M shifter.

It all adds up.

For that price i'd go the standard RE401 box with billet everything and have an overdrive.

[WHITER33GTS-T]

Having overdrive would be nice but that box can only handle 350rwkw and im making more than that so i dont want to spend money on something that wont be up for the job.

2RISMO has a built C4 and he loves it. Its a little more expensive but sounds well worth it and is next on my list of mods. Thats when i stop spending all my money on my house. lol

[2rismo]

Fred now does so many RB to C4 adaptations that he keeps most of the parts on the shelf.