Supercharger

[Stealthee]

I drive like a machine built for driving.

I just cant wait to get a trans put back together. At least if this one breaks its got a lifetime warrantee.

Quaiffe LSD FTW.

[whitenoise3k]

Just a little note something that really helps to keep your transmission safe are solid engine mounts from maximal performance (which is another mod of mine i forgot to mention) you engine does not budge. what kills transmissions is not so much will hop its engine shifting everytime you shift its really hard on them. I know many people that have ripped transmssions apart because of bad engine mounts on just the launch. Solids are they way to go.

[Stealthee]

I have had solids for two of my blown transmissions.

The very first blown trans was killed due to wheel hop. Thats why I got the solids, well that and Terry is a friend of mine.

The second there was zero wheel hop and it blew on the very first launch at the track. Tires turned over twice on the launch and it popped.

This one popped somewhere in the 12 mile trek from work to home. I didnt even drive it all that hard as I was following traffic.

I'll say iit again, these transmissions are like glass.

[gipper72488]

Originally Posted by Stealthee

When I get a better job and have some funds I will eventually go pretty big with what I want.

as much as you know about these cars it shouldnt be too terrible for you lol.

i fragged my tranny in my atx sohc on a launch, hence the main reason its gone and i have a gsx now. i know i could have replaced the trans for fairly cheap, but someone offered to buy it from me for almost what my buddy wanted for the gsx, which i had my eye on neways lol.

to the op, if you are bent on going SC, get a lsd, solid mounts and a strong clutch.

orrrrr since you are dohc, you could always get the Getrag 5spd and convert it to fwd

[Stealthee]

Getrag will work on SOHC too.

I know a guy who put a 6 speed Getrag in his 98 SOHC. He blew his trans and had the 6 speed available so he put it in and then was getting ready to do a DOHC TT conversion too.

[gipper72488]

Originally Posted by Stealthee

Getrag will work on SOHC too.

I know a guy who put a 6 speed Getrag in his 98 SOHC. He blew his trans and had the 6 speed available so he put it in and then was getting ready to do a DOHC TT conversion too.

sweet. thats very good info right there

[s5pitfire]

I wish the SOHC was supercharger friendly
Think of how sweet it'd be if the ecu accepted s/c rather than regurgitated it
Vortech @ low boost, around 6-8 psi, kit for ~2k plus bits and pieces like boost guage etc (THEN some radials up front, lowering springs, and strut tower bar, LSD)
Have torquey little monster, make it feel like a small block v8. And be able to stomp all over my cocky friend's 07 G35 sedan (with intake, headers, cat back, BUT soon to put a T70 turbo and FMIC on it )

Turbo is such a pain due to allll of the custom fabbing of the mani's and piping

[casperlynn]

Ok..ok...I need to bust up some misinformation and clarify mentioned points!

I have been running a Eaton M90 sc on my 95 base for over 4 years (with the base ECU ) and it has always ran great! The first SC was a first gen, Thunderbird with the oval inlet which is not the most efficient and was only pushing 9psi which is about the max psi a 10:1 engine can safely handle. The only difficulty I experienced was intercooling as it would kill the engine when coming to a stop. That bug was never worked out but I am sure it is because the throttle body is before the SC. This setup was dyno'd at 416 at the crank and I had an unabated top end of 152mph capable of doing a bit more but the interior pressure was trying to blow the sunroof out.

I have since, installed a new, OEM VR4 shorty (to allow for increased boost) with the same stage 3 DR heads with 99 oilers, 450cc's, alchy injection, 3.5" GM MAF translator and Mirage Corp data logger, 7 1/2" diameter crank pulley (from a 2.5 98 Avenger), 3.33" diameter SC pulley, all coverted to a 6 rib contact, and am currently swaping out the SC with a 3rd gen Eaton with the rectangular inlet, teflon coated rotors and porting (capable of pushing 18 to 20 psi). I was wise enough to refresh the trans and install a Quaiffe LSD in the process. All the power is transferred to Yokahama rubber via a Spec, 6 puck clutch.

I have not had the opportunity to dyno the current setup but all indications are, I should be pushing around 450 chp or about 375hp to the road

Due to the insane low-in torque, it is extremely advisable to install the Quaiffe (not some cheap locking insert) and replace the mounts with solids (in my case, polys which are a bit more forgiving). I have absolutely no engine rock or wheel hop, just a bit of clutch chatter which is to be expected with a racing clutch.

In summary, a 3kgt base platform is a great candidate for supercharging. The SC is self contained (no external oiling, etc.) and are pretty much maintenance free for over 100k miles. Just change the oil once a year and put on a fresh Gatorback.

Yes, it is much more expensive then going TT (and I do admire those that have done the conversion as it is a lot of work.....much more than supercharging) but it is much more reliable if built properly (NO shortcuts!). Most peeps that have experienced SC problems did not build the car correctly. Above all, it is very rewarding not "following the crowd" going with a conversion. It may not be unique but it sure is not main-stream. Set my car alongside a TT'd conversion or VR4, my setup always gets more attention.

My .08 cents.

YouTube - supercharged and intercooled 95 3000gt

[casperlynn]

Originally Posted by whitenoise3k

No, dont ever run turbos or a supercharger on a NA ECU, very bad the ECU will no compensate for boost therefore you will run lean and grenade your engine.

Hi there...your comment has left me a bit puzzled. I too, am running a M90 (over 4 years) with a FMIC and have had absolutely no problems with my NA ECU (which does not know what boost is). No, it does not compensate for the lean conditions the SC (or turbo's for that matter) creates. That is why it is imperative to have water/alchy injection for pre-detonation, colder plugs and a piggyback programmer to dial in the larger injectors and air flow. There are several that have TT'd their NA and are having no problems with the NA ECU (Greenlantern for example).

Regardless, great to "meet" another SC enthusiast!

Garrie

[whitenoise3k]

you have to remember that water methenol you are running is richining up you fuel burn therefore you are not going to be running lean. yet again I say you NA ECU will not compensate for boost you have the correct set up to keep your engine from running lean. a MAF that does the job and methenol that richin's up you fuel.

you system is working in this case, LOL dont take my posts so so literally no offense but think it through a little.