Dude... save your time, frusration and money for a GSX... and you will have money left over .

 

Well I called up Hahn Racraft today and they informed me that the 1999 Spyder GS has a 2.4L 4g63 engine and the 1999 Spyder GS-T has a 2.4L 4g64 engine. I asked them if I could just swap out manifolds and make the turbo conversion. They said that this is not an option.

They sell a kit for the 420a engine to make it turbo for around $3500 dollars. Now that even includes a fuel control system and your new manifold and the charger and intercoller and oil lines. She said it's a complete turbo conversion kit, everthing you need. I forgot to ask if that includes fuel injectors
She said this kit produces 275hp. I asked about more hp and she said that 300-350hp was the limit on the crank and pistons on the 420a. Where as you can put more like 400-500hp ona 4g64.

She also said that there was a company who once sold a conversion kit to turbo the 4g63 engine but that that company is now out of business. She started to say the name but I didn't litsen. Now i'm regretting it since I'm trying to find an ancient used kit I don't know the name of

Well Engineer I've been thinking about what I'm gonna use it for and I'm wondering if I even need a turbo. It's gonna be a daily driver so i'm not doing any aftermarket body mods. I do alot of interstate communting for 2-3 hours at a time and I need a car that doesn't mind a constant 90mph for three hours on a regular basis. The '91 Camery 4cylinder stick with 250,000 miles is aging fast with this rutine. Though to its credit it's still runs like a top and only recently started black smokin the exauhst and only then cause I'm mixing oil weights and brands. I want a car that I can punch at nintey and still get juice out of. At 110mph the Camery is top ended, and its no short jaunt between 90-110mph.

Fuel economy is also a concern. Would I come out better to just add a cold air intake, an oil cooler, some 625mm fuel injectors, a racing clutch, some brakes and some 18inch wheels, with an electronic ignition control????

Now I read on Hahnracecraft that they have an electronic ignition control with 1000 programable points as oppossed to what they claim is the standard four. This thing also comes with software so it can talk to your laptop. Using a laptop mount in the car can I make two fuel map programs and change in mid course for the application???? I mean can I make a fuel economy map and then a NEED 4 SPEED map??? Can I remap in motion???

Seriously though what is the fuel consumption difference with and without the turbo???

By tech spec I mean like a place that will tell me what kind of engine is in what model can and other general stuff that's need to know when shopping 4 parts.

So Engineer can I have someone make an exhaust manifold with a torbo port and, add 625mm fuel injectors, intercooler, oil cooler, KNC air filter, the 4 point spark plugs w/ the 8.5mm race wire, high performance clutch and lightened fly wheel, then have an electronic ignition control custom programmed for the engine after these mods. Escentially build my own turbo kit 4 it. Is this something feasible, OR will I still have trouble with the ECU not being originally 4 a turbo??? Does the ECU have anything to do with the turbo???

Lots of work doesn't scare me. I just moved in with my dad and he has a fully stocked shop with every tool you could need + air compressor and pnuematic tools, and EVEN an arc welder or mig welder or somethin??? It's all gathering dust He never uses it and now that I have access to it somebody might aswell use the stuff

I asked our asian car mechanic today and he said he doesn't mess with after market work, to much head aches he said He told me to see Mark Chamel who builds his own cars from the frame up, but races american engines. I haven't talked to him about how much he knows about Mitsu's yet. He builds AMerican race engines for costumers I know that. In his business end he specialises in electrical work and mufflers, especially custom exhaust so if I need to havee a new manifold made and maybe some electrical work I'm covered on that end. Though he is VERY expensive, but does VERY good work. As I guess is to be expected from a man who lives across the street from his shop and fixes other ppls cars to afford to build his own The less I have him do the better He'd eat my checkbook 4 lunch If all I could have him do was make the custom manifold and program the EIC, which I know he can do cause I've seen it on his own cars, that i could afford. If I need to have him put a different ECU I couldn't afford that. Though his wiring work will outlast your children AND the car, he is that good. I just can't afford too much of that good

I really can't thank you guy enough for all your help. Thanks for digging me up that link Engineer, I'mma go check it out right now.

 

well Sebba the thing about just getting the GS-T, cause the GSX doesn't come in convertible, which really agravates me cause ALL WHEEL drive is even MORE inportant in a convertible I would think, personally, but who am I right???

and THEN there's the factor of it being a 1999 with 58,000 miles on it and it was an older chick havin a midlife crisis car and she never ragged it, kept the oil changed, it's like new. The only reason she got rid of it is cause two little brackets broke in the roof and its either very exspensive and/or time consuming to fabribate new brakets or get an entire new roof since the brakets are riveted to the main frame. I don't give a **** if onna the ribs that hold the liner and the roof shape is unsupported. Since I ripped the broken braket off the liner even attaches to the windshield again and the roof goes all the way down. Who cares if it's a little slack in te middle, which it will only be when it's parked or raining

See I'm thinkin it'll be easier to mod this near mint ride than it'll be to find a 1999 Spyder GS-T with only 58,000 miles and in great physical shape, AND hasn't been blown out to all hell

 

Just to be a little random hasn't the spyder been converted to AWD with money and elbo grease since it shares some similarities to the GSX body.

 

uhuhuhuhu haaa haaa haaa

YESSS Excelent AWD hehehehehe

Wow the lady in the sales at Hahn's had it confused. The '99 Spyder GS has the 2.4L 4g64 engine and the GS-T has the 2.4 liter 4g63. The only difference being in the stroke difference, the 64 having longer stroke cuasing more damage at high RPM, but giving substantially more torque. I'm guessin torque = take off??? They share the same rod and the 63 is 6mm taller on the block deck. I don't plan on running in high RPM much anyhow.

The guy, Curt, in that link form The Engineer threw the mincey little straps that hold the rod down and had to do a full engine replacement. I think I might beable to add more of them mincy little straps and/or beef them up. That was one of the first thing the first bootleggers found they had to do after they added larger rods and cams and pistons. They found they had to strap the rod down better. Mercadies had some very nice turbo chargers availible at that time, though your average american 1st gen hot roder couldn't afford it But i think it would help in this case to. It was the straps that hold down the rod he has pictures of in the oil pan, and they do look like scrowny little twirps of rod straps

The conversion is pretty much a striat forward strap the parts off the 63 onto the 64.

Aparently you do need the ECU from the 64 for the knock control but it is a strait swap.

After looking at the link to Curt's Spyder and his walkthrough of how he did the conversion it looks pretty simple and strait forward, and not all that expensive. Around $5,000 and you could make a REALLY fast torbo conversion. He put harded pistons and a beefier rod or somethin so he can push more psi through the turbo charger, and once you've gotten this far you might as well right??? Curt certianly thought so But I'm thinkin fuel economy and more psi through the turbo is not so good on fuel economy

Now can you make two maps and change when you need them is the question???

 

why do you want to modd it just because you commute a lot? I have an Eclipse GS 1995 with rebuild 420a engine and Tranny. I drives that bastard almost 5 hours a day running between 85 - 90 all the time and still runs pretty good. Why waste money on turbos if you can save them and just buy a car that already has turbo in it like Sebba mentioned. If I were you, I will just take a good care of that Spyder.

 

I don't think any of the 2g eclipse's came with a 2.4 liter block Im almost 100% positive they were all 2.0's or 1.8's if they were the RS.

I have a 99 spyder gs-t and i would seriously recommend going with a hardtop coupe if you are going to be doing a long commute because Convertibles are noisy and have tendancy's to get slashed

 

after reading what hahn said about the engine i was gonna correct but then you already did. Phew but now im exhuasted from reading, haha.

Ok the 2g turbo all came with the 2.0L engine and the spyder NT came with the 2.4L 4g64 like you said. Now as far as building a turbo kit for it, sure you could, it wouldnt be all the difficult for the prive you put up. Alot of people have done it on those engines. As for gas mileage it would depend on how you drive it. If your just cruising at around 80 then i would say youd probably get about 20mpg as apossed to the 25mpg youd probably get without a turbo. Im just guessing here though, but thats what it would seem to me.

Now when your talking that you want to car to be able to go at those high speeds, i think its something you need to test drive first to see if you want more out of it. Because i dont know exactly what your looking for or if the stock power would be enough for you. As far as having the two fuel settings, there is things you would do to make it more fuel economy but you cant have two settings. The thing with the turbo is that when you tune the fuel for it, you will actually be getting better mileage, and alot of people dont know that, because you will actually lean it out. So two settings wont even be necessary.

So basically what im saying is as long as you go with a smaller turbo and good tuning, you really wont see a huge difference in fuel economy. Obviously it will be noticable, but i would figure on around about a -6 to -8 mpg difference.

 

Yeap.. well having a turbo is just fun. Fuel economy like was mention is based on how u drive. If your not boosting and just casually driving its nothing really. But if your driving hard and boosting hard in every gear then you will notice the extra gas used up. Why not have a dual stage boost controller. That way u can run low boost for ur regular drive. Then high boost for those moment when u feel u need to show off lol.

 

I had a '97 Spyder GS before I bought my '99 GS-T coupe...The engine in the Spyder GS is the 2.4L 4G64!!! The GS-T has the 4G63!! The Spyder's top was a huge pain in the *** for me and when I bought mine it was only a year old and there weren't too many mods out for it at the time..So the big reasons for me getting rid of it were #1 the top and me replacing all the elastic and having to fix brackets that it kept bending was the last straw for me there and #2 there were so many more mods for the turbos...Do yourself a favor and go with a GS-T hardtop coupe or GS-X with a sunroof and already has a turbo...It was the best move I made..I'll never own another convertible again..I'm so much happier with my '99 GS-T coupe.