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NewB w/ 800hp 1g

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ATEAV8

Proven Member
71
37
Jan 28, 2016
Seekonk, MA, Massachusetts
New guy here just checking in. Have a 92 Talon with 800+ hp w/ stock crank, eagle H beam rods and wiseco 8.3:1 pistons. 100% street car. Any questions, feel free to ask. Other than that, see you around the forums
 
:tease: I had a buddy who had a mechanic type business and one of his customers called him and said his low coolant light came on and he thinks he filled up coolant where the oil goes... he did :applause:

Oil change tips can he helpful :D
Welcome to the site, where you been since the last 500hp?
 
read right over the compression the first time, that's really good to see the stock crank holding it down at those numbers. building my motor the exact same, glad to have you and your knowledge on the forums
 
Id highly suggest not running an Hbeam rod or a standard wiseco piston. Its going to pop one day. Im well past 500ft lbs tq. I honestly dont know how it hasnt blown up yet

This was 587whp
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I would expect a stock forged crank, properly prepped should hold that, granted it seems raged edge.with a nuts-on tune tho it should be good, as ATEAV8 appears to have.

That's sick man, hope to hear more and see more of you car!
 
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I built this 6 bolt and is set to my specifications. Im not shy about sharing anything.
-stock crank balanced under 1 gram left to right, oiling holes chamfered. then had flywheel and pressure plate balanced
-arp main studs line honed correctly to .0025" mains
-eage rods opened up end gap loose and run a .0030-.0032 oil clearance
-king trimetal bearings coated by swaintech
-off the shelf wiseco pistons 8.3:1 w/ a .0040 pwc, .022.024 ring gap bored w/ torque plate
-stock oil pump, straight cut gears, stub shaft

So far so good. Im ready to build right when it goes pop

And I just seen there is a specific section where we do Intros... typical newbie already not following rules. mods feel free to move thread ;)
 
Welcome the the forums. However...

I honestly dont see where this 800+hp number is coming from on such a small turbo. Crank/uncorrected figures? Whats you boost levels, because its hard to believe with the small inducer, and such mild cams. Looks grossly inflated.
 
Mustang dyno, 686/542 Our dyno is known to be the lowest reading of them all. Went to another mustang dyno and it made 17 more hp same day. I could go to a dynojet and get my dynojet number which will be very close to if not 800hp so at the crank its 800+. 44psi. I gained about 60hp just by degreeing cams. Thank you for the compliment. I get it alot and am used to being accused of having a bigger turbo than I claim. I havent even began to start pushing it. Timing still kind of low and I am on some crappy cams. I want some gsc but this setup works so well, im scared to change it. Im scared to push it more because I dont know how much longer bottom end will last so after my 4th pull on the dyno, I just stopped. No doubt I could crack 700 on a mustang dyno.

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What hotside and intake? Where did you find the hks 272s liked to be? I ran mine exhaust straight up, and intake -10*. Seemed to have the best airflow like that.

I have kelfords now and hate them.

What are you considering low timing? I just stepped up to a big boy turbo and am trying to figure it all out. Gtx3788avnt.
 
So, 700whp on a SAE corrected dyno. Other figures like your 800hp number is just a speculative inflated number. Nevertheless, its still good numbers. You already look close to maxing out the turbo, so i'm not sure how much harder you are trying to push it. I would be getting cams and a intake manifold to work on engine efficiency and maximizing your setup.

There's a handful of people here making big numbers, more of us if you're on the link forums.

What are you considering low timing? I just stepped up to a big boy turbo and am trying to figure it all out. Gtx3788avnt.

Whats the gtx3788? Havent heard of it, only the standard gt3788. Also why didnt you like the kelfords? Too much of a low end loss compared to your old hks?
 
T3 .82 vband out hotside
BJs old school intake manifold on a stock TB and ported 2G elbow
Degreeing cams on every motor is different. I don't see how it's possible -10* on the intake cam is working. Something isn't right with that. I'd suspect a tooth off at that point. But my specific setup I had 0-0 and made 615hp baseline pull, then adjusted intake cam gear +2* and made 658 hp increasing power across the entire powerband. I then adjusted exhaust back -1* and it added 5hp 7000+ rpm but reduced power in the rest of the power band so I put exhaust back to 0. Then advanced intake another +1.5* (total +3.5*) and got another 14hp across the whole power band. Then I left it and never touched a thing. Now it just snaps input shafts on 3rd gear pulls on the street. It spins3rd gear on the street in 255/40/17 nt01. Fun street car.
Timing is at 10* peak torque and 16* up top on e85. I don't know where it stops making power yet I kind of stopped there but I'd imagine 12* peak torque and 18-19* up top is the sweet spot. I won't know until I try. A/F still rich 11.5-11.8. It seems to like 12.2-12.5 on e85 but I leave it fat for now. I gained another 17hp going from 11.2 to 11.7 area up top which put me at the 686. I'd have to upload the dyno sheets to be 100% sure but that's all off memory and within 5hp :)

So, 700whp on a SAE corrected dyno. Other figures like your 800hp number is just a speculative inflated number. Nevertheless, its still good numbers. You already look close to maxing out the turbo, so i'm not sure how much harder you are trying to push it. I would be getting cams and a intake manifold to work on engine efficiency and maximizing your setup.

There's a handful of people here making big numbers, more of us if you're on the link forums.
?

I'll hit 800 on a dynojet. I just have to bring my car there ;)
Motor puts out 800+ hp. It's not inflated.

I'm scared to change intake manifold or the cams because what if it makes less power? Think I'll gain anything going a jmf intake manifold on a s90 tb w/ gsc s3 cams? That's some $$$ to be out if I make the same or less power.

I'm more interested in making 4000-5000rpm power and keeping my upper power band at 7800 peak power. I had a 6266 on it but sold it and went 6062 for that reason.
 
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Your peak torque timing to me is pretty aggressive, I like to keep mine around 5-7* max and ramp to MBT and back off. Be careful on getting greedy with timing on e85. Pre-ignition is disastrous on and keeping timing down at peak torque will keep the stress and cylinder pressures down. You'll make more power leaning out, but i'd leave it fat if youlike to hot lap.

No experience with a BJ's IM, but I've ran a forrester, jmf race and magnus v3(swapping to 2g head and magnus v4). The magnus for me was great. Negligible low end loss with dramatic increases in mid and top end.(reason for 2g/magnus v4 is to see if it fattens up the curve) I like to experiment with different setups so its not an issue for me.

Now for the TB, I would keep it stock. A TB upgrade is only viable when compressor inducer is larger than 60mm, and you're right at the limit. Now for the cams, thats the tricky part since you want a peaky mid range and low rev limit. At max I would go s2's. I have kelford 272s and they are mismatched for my setup because I drive on the streets, but they are tolerable on the low end. On the other hand, my car doesnt even start spooling/making power until 5.5k, LOL.
 
5-7* is pump gas timing.

I run that on e85. Like I said, the low timing helps controls cylinder pressures with the high load the motor sees in that range. I personally like to keep it conservative in that area. If you dont already, using virtual dyno helps tremendously in checking MBT if you cant constantly go to a real dyno.
 
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Like I said... The car keeps making power at this timing. I'm probably close to MBT but not there yet.

I'll probably turn down the timing in peak torque area just to save the transmission
 
Oh geeze, I was up at 15 at peak torque running to 23. I'm on a smaller turbo and non projected plugs.

Anyway my hks were delta regrinds so who knows if they had some advance ground into them. Plus I was a pretty high back pressure setup so overlap is bad for that.

The kelfords didn't gain any airflow over my regrinds. The idle is smooth but it won't idle under 1200, and it was stall happy. And they didn't even sound cool. There is no pluses to them. The regrinds made the same power, would idle stable at 750, even with the tune adjusted to max lope. It was super radical sounding! And they were much easier on the valve train.
 
T3 .82 vband out hotside
BJs old school intake manifold on a stock TB and ported 2G elbow
Degreeing cams on every motor is different. I don't see how it's possible -10* on the intake cam is working. Something isn't right with that. I'd suspect a tooth off at that point. But my specific setup I had 0-0 and made 615hp baseline pull, then adjusted intake cam gear +2* and made 658 hp increasing power across the entire powerband. I then adjusted exhaust back -1* and it added 5hp 7000+ rpm but reduced power in the rest of the power band so I put exhaust back to 0. Then advanced intake another +1.5* (total +3.5*) and got another 14hp across the whole power band. Then I left it and never touched a thing. Now it just snaps input shafts on 3rd gear pulls on the street. It spins3rd gear on the street in 255/40/17 nt01. Fun street car.
Timing is at 10* peak torque and 16* up top on e85. I don't know where it stops making power yet I kind of stopped there but I'd imagine 12* peak torque and 18-19* up top is the sweet spot. I won't know until I try. A/F still rich 11.5-11.8. It seems to like 12.2-12.5 on e85 but I leave it fat for now. I gained another 17hp going from 11.2 to 11.7 area up top which put me at the 686. I'd have to upload the dyno sheets to be 100% sure but that's all off memory and within 5hp :)

this car must be wicked... nice work... welcome.
 
To update this and my inflated numbers, I swapped out the hks 272 for gsc s2 and retuned it. It made 703whp on a loaded mustang dyno at 42psi on pump e85 (e72). Then I brought it to the track and it traps 150-152mph. Had it setup like this for 2 seasons. Finally cracked the block into the water jacket at bottom of cylinder so swapped everything into another block and kept sending it. Went through multiple transmissions shattering 3rd gear mostly mid pull. Never did bring it to a dynojet to get the 800 number because I really do t care about those things to chase clout but I did turn the boost up more and trapped 156mph. Not sure what that trap speed calculates out to for a dyno number.

Then I parted it out because I got tired of doing 3 transmissions a year. Built an evo instead on a 6466 and made 823hp on same dyno and traps 164mph
 
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