Getting the G20 to 200 hp

[Chunga]

Hey G-20 drivers,
I really don't know much about upgrading my car's engine, but i was wondering how i could get my 140 hp G20 up to 200 hp as cheap and easy as possible. If you could cite some parts and prices that would be helpful. (I'm trying to keep it under $1500).


Chris

[Swonder67]

Cheap? if you wanted to get 60 cheap horsepower I wouldn't have gotten a G20. There is the usual stuff, ECU, Cams, pulleys. But the real power is in the turbos. For ECU's, there is the Jim wolf technology ECU, and JUN makes one for the G20 also. for Cams, Jim Wolf technology, and JUN makes cams. But like I said, you want real power, go with a Turbo. F-max, Hotshot, and Jim Wolf all make turbo's. There's also the SR20DET engine if you got the cash

[Chunga]

How about the Venom 400 chip. Would that help it out, and could i put it in my car. How much is the t engine?

[primera man]

To get another 60bhp is going to take a lot more then $1500.00

You best bet would be to turbo it, the same as Luke done here to his.
He changed engines instead of up dating the one all ready in it

[Swonder67]

Well, you might be able to find a DET for under $2000 But it all depends on the condition of the engine. Also, they usually don't come with ECU, tranny, wiring harnesses, etc. About the Venom 400. I wouldn't do it unless you have more engine mods. 25% is alot of HP Gain, but without doing anything else to the engine, I duno how effective it would be. Plus, I don't think they make it for the G20

[P10DET]

Originally posted by Chunga
Hey G-20 drivers,
I really don't know much about upgrading my car's engine, but i was wondering how i could get my 140 hp G20 up to 200 hp as cheap and easy as possible. If you could cite some parts and prices that would be helpful. (I'm trying to keep it under $1500).

That's not enough money to get you to 200 bhp.

I know because I've done it twice. Once turbo, once NA.

The cheapest way is to go turbo. You can either add a turbo or drop in an SR20DET. The overall cost will be pretty much the same by the time you're done. Adding the turbo will be a little cheaper, but if you sell your old engine it will be about the same. Plan on spending about $2,500-3,500.

If you attempt to do this normally aspirated, you can expect to spend about $6,000. That is how much my NA engine ran including all the mods except the header. Add another $425 for that.

George Roffe
Houston, TX
<http://home.earthlink.net/~geo3/>

91 Black SE-R w/:
16x7 BBS RX, Yokohama A520 215/40-16, Swain White Lightning coated Hotshot header, Random Technology cat, Trust (GReddy) exhaust, AD22VF brakes, Axxis pads, Goodridge SS lines, Tokicos, Eibach Prokits, ST front sway bar, Courtesy front STB, Stillen short shifter, Naeyaert rear STB, Fiamm air horns, Factory cruise (not available in 91), DPR Stage VI head w/ HPC coated valves & DPR valve springs, Swain TBC & PM coated 300ZX pistons with domes removed, 1mm overbore, SR20DET piston coolers, complete balancing, CM aluminum flywheel, JWT Pressure Plate, Unorthodox Racing pulleys, 370cc injectors, JWT ECU, JWT S3 cams, ES suspension bushings, ES steering rack bushings, Nu Tech adjustable rear swaybar, Place Racing CAI. Momo Shadow shift knob (engine currently out of the car and being rebuilt - we can rebuild it, we have the technology, we can make it stronger, faster, better :-)

91 Red G20 w/:
Courtesy short shifter, Random Technology cat, 17x7.5 ADR M-Classic, Sumitomo HTR-Z II 205/40-17, Momo Shadow shift knob, Momo Shift Boot, Momo pedals, Momo Runner steering wheel with modifications to use factory cruise control, KYB AGX dampers, Ground Control coilovers (275/200), Bluebird SR20DET, Unorthodox Racing pulleys, JWT clutch and Pressure Plate, JWT aluminum flywheel, Swain Tech White Lightning coated exhaust manifold; turbine housing; exhaust elbow, Extrude Honed exhaust manifold; turbine housing; exhaust elbow, Stillen Intake, HS prototype DET installation kit with HKS intercooler - coated with Swain Tech Black Body Emitting coating (what intercooler?), ES shifter bushing

[primera man]

George....Wasn't it you that said that they turn the heads around on the block as in the BTCC engines ??

[P10DET]

Originally posted by primera man
George....Wasn't it you that said that they turn the heads around on the block as in the BTCC engines ??

Yes, that is correct.

The intake points towards the front of the car and the exhaust header is between the engine and the firewall.

[jprimera]

That is a lot (6.000 ) George

500 header
550 catback
200+ ur pullies 2 set
200 +cai
600 c3 cams
? ? head work
?? extrune horning
500 ecu

What else ,George ,Im planning to do this goal ,but 6.000 is too much for me ,I will try to expend no more than 2000 in the motor ,can I get 180+hp?cant get the ecu and the head work.

[P10DET]

Originally posted by jprimera
That is a lot (6.000 ) George

<snip>

What else ,George ,Im planning to do this goal ,but 6.000 is too much for me ,I will try to expend no more than 2000 in the motor ,can I get 180+hp?cant get the ecu and the head work.

The head work alone was $2,200 including the valve springs. I spent about $160 on coatings for the pistons and $200 for coating the header. Gaskets and seals alone were $165. Bearings were around $200. The miscellaneous stuff was in the hundreds. Flywheel was $360 on a group deal. Clutch and pressure plate were over $200. It all adds up.

[jprimera]

So can I get around 170+hp with

header cams cai pullies catback and 18 timing?

[P10DET]

Originally posted by jprimera
So can I get around 170+hp with

header cams cai pullies catback and 18 timing?

Yes, that should be possible - especially with dyno tuning.

If you could get JWT C series cams with the JWT valve springs, you should be able to get another 10 bhp if you get adjustable cam gears as well.

You don't have a roller rocker engine do you? If you do, you can't use most of the cams that are out there. They must be designed for a roller rocker engine.

[jprimera]

I DO HAVE THE ROLLER ROCKER ENGINNE ,BUT I SPOKE TO JWT AND THEY TOLD ME THAT THEY ARE DOING CAMS FOR MY MOTOR ,BUT HAVE TO WHAITH FOR OCTOBER NOVEMBER ,HOPE THIS IS TRUSTH ,ANYWAY I WILL GET THE HS HEADER AND UR PULLIES(2 SET)GOD FOR 10+HP.THANKS GEORGE .

[P10DET]

Originally posted by jprimera
I DO HAVE THE ROLLER ROCKER ENGINNE ,BUT I SPOKE TO JWT AND THEY TOLD ME THAT THEY ARE DOING CAMS FOR MY MOTOR ,BUT HAVE TO WHAITH FOR OCTOBER NOVEMBER ,HOPE THIS IS TRUSTH ,ANYWAY I WILL GET THE HS HEADER AND UR PULLIES(2 SET)GOD FOR 10+HP.THANKS GEORGE .

My pleasure. I knew they were working on roller rocker cams, but I didn't know how soon they'd be out.

The HS header should be worth about 12-16 hp. The pulleys, about 3-6 hp if I remember correctly. No idea what the cams will be worth, but if I had to guess (knowing how JWT actually develops their cams), I'd guess in the 12-18 hp range.

By the way, I thought you would like to know that typing in all capital letters (upper case) on the internet is considered shouting.

[jprimera]

I did not know ,thanks