Possible to run a 13.99 before the turbo?

[JClaw]

Is it possible to break off a 13.99 before I turbo the 3.0?

I want to set up the suspension, exhaust and motor before I turbo it and might run it a few months at the track NA. Car weights around 2770 INCLUDING driver and gas. I had the following in mind, mostly pre-turbo prep:

-Ported stock 12V heads
-Custom equal length headers (Mig welder free time!)
-2.75" exhaust all the way (too big I know but I am not doing another one for the turbo later)
-Custom pig plenum/shortrunner intake manifold with a 70 mm VQ35 throttle body and the intake path 100% straight over the radiator support (sort of like an LS1, with the filter straight to the grill)
-Lower radiator to accomodate the above setup
-Megasquirt with bumped rev limiter to 6500 and advanced timing as much as safely possible on 94 octane

I will leave the bottom end untouched. Are Diamante cams a good idea, considering the car is gonna get turboed later? Or is there a better option from another stock 6g7x engine?

It seems I would need to achieve around 200-205 HP at the crank to trap 98 mph at my weight. Which is around 162-165fwhp. Doable? Assuming a 1.8x 60 foot, would it be possible to break off a 13.99@98-99 mph, considering the car weighs about 2570?

[Ondonti]

Get slicks and make sure you have a good clutch and try it. With slicks I dont think you need to trap 98mph to run a 13.99.

It would be best to prove you can trap that high though otherwise your guessing doesnt really matter.

No point making a 2.75" exhaust just make a 3" I honestly dont think you can feel a difference between 2.5" and 3" exhaust on a 3.0.

I think the ECU work is the most important part. Prevent the engine from leaning out above 5k.

[onecrazyphucker]

Well, I used to own a 93 Sundance Duster 3.0L N/A 5 speed. I ran a 14.208 @ 96.96 w/ 2.109 60 ft. Race weight was about 2700 lbs. I believe I could have ran a 13.9 with slicks. Check out my cardomain page to see pics and a list of mods.

http://www.cardomain.com/ride/693477

[mopar3.0]

did you have full interor for that? seems heavy for ap body unless its full interor
if i find a 2 doro p body it will run a 13.9 god dammit ,or il burn it
custom cams,10.1 pistons, poreted heads, looking at itb's
aluminum fly wheel 6 puck cluthc megasquirt msd 6a

im running 3/85 finals but i think i might go back to 3.77 first is too dam short

[onecrazyphucker]

Quote:

Originally Posted by mopar3.0 did you have full interor for that? seems heavy for ap body unless its full interor \

My car? No, it was mostly gutted. It weighed in at around 2450 lbs without me in it. I weigh around 250 lbs, which put it around 2700 lbs race weight.

I weighed it before i gutted the interior. I removed the passenger, and rear seats, spare tire and jack. Race weight was about 2900 lbs. The car still ran a 14.345 @ 93.77, record trap speed at that weight was 94.75 mph.

[JClaw]

Quote:

Originally Posted by Ondonti Get slicks and make sure you have a good clutch and try it. With slicks I dont think you need to trap 98mph to run a 13.99. It would be best to prove you can trap that high though otherwise your guessing doesnt really matter. No point making a 2.75" exhaust just make a 3" I honestly dont think you can feel a difference between 2.5" and 3" exhaust on a 3.0. I think the ECU work is the most important part. Prevent the engine from leaning out above 5k.

3" it is then! I have succesfully installed and tuned an E-manage ultimate on another car, MS-II will be my first time. How much timing can I safely run on stock heads and 94 octane. 15? 17?

I'll tune to 12.5-12.8:1 AFR at high RPMs. How high can I safely rev the stock 3.0 NA? 6500? 6800?

Quote:

Originally Posted by onecrazyphucker Well, I used to own a 93 Sundance Duster 3.0L N/A 5 speed. I ran a 14.208 @ 96.96 w/ 2.109 60 ft. Race weight was about 2700 lbs. I believe I could have ran a 13.9 with slicks. Check out my cardomain page to see pics and a list of mods. http://www.cardomain.com/ride/693477

Wow awesome times! Definately gives me some hope! You would have only needed a 1.95-ish 60 foot to pull off a 13.99. Sad it got totalled.

I'll remove the A/C (which does not work right now), install UDP and put it back on only once I am turbo. My plan is to do the 3.0 5-speed swap in March, and turbo it in July. Track opens April 1st so I'll have plenty of time to do some bracket racing and work on the launch, getting to know the car.

However, there are two things I'm confused about.

First- the cams. Which (stock) cams from another 6g7x car are worth it and good for a turbo too? Whcih year/model?

Second- Most importantly, the 5-speed. I want either 3.77 or 3.85 final drive but I'm not sure which car and which year came with which gearing.

I'd love to have the following 1-5 gearing;
3.29:1
2.08:1
1.45:1
1.04:1
0.71:1
3.77 OR 3.85:1 final drive, whichever is available with the above gearing.

But I'm not sure if it's available as a V6 trans and which year it was available. I hear the Spirit 3.0 had the 3.77, but I also hear it had "longer" gearing which certainly doesn't correspond to the 1.45:2 3rd gear and 1.04:1 4th gear. Or was it just different years Spirit? Thanks a bunch guys.

[mopar3.0]

well my spirit ran 98 mph trap on a g teck
with no traction what so ever lsd but wack street tires

but they say the trap speeds on the g teck are off a bit

[JClaw]

Yeah G-tech is somewhat off. Have you ran it at the track?

Slicks can rob trap speed if they are overkill for your needs but trap speeds increase when you get proper traction with JUST enough tire for your setup.

Anyone know about the V6 5-speed year/model differences?

[Ondonti]

No such thing as a manual trans v6 spirit from the factory.

Nobody really knows what max RPM is safe. Our stock cams are tiny so I would guess that you might get away with 7000 or more. We just dont know. You would ned a set of heads built by Ed to take advantage of RPMS like that though.
Nobody really knows what max timing is a good idea.
Set your MS up with a knock sensor.

[Ondonti]

Quote:

Originally Posted by mopar3.0 well my spirit ran 98 mph trap on a g teck with no traction what so ever lsd but wack street tires but they say the trap speeds on the g teck are off a bit

I think you were going downhill a little bit. you need to go both directions on the same street if you are trying to make a good estimate unless you have consistently trapped the same in both directions in the past.

Also you can calibrate your gtech at the race track to help it be more accurate.

I can say that I have never seen a g tech trap speed be lower then actual track peformance :P (unless you calibrated it to read slow)

[mopar3.0]

na i did trap thoes speeds more then once,was pretty flat

[Shadow24V]

im hoping to take a crack at the fastest N/A title with my 24v. i might be able to get 200+WHP on a good tune as is so *crosses fingers* all depends now well i do at the track

[mopar3.0]

200+WHP im hoping for close to that

jeusus my buddies vw soroco runs low 12's and it only makes 190 hp to the wheels, all about weight

[Ondonti]

Quote:

Originally Posted by mopar3.0 na i did trap thoes speeds more then once,was pretty flat

I mean go both direction on the road to balance out any decline/incline.

BTW I am going to try to get a set of those sexy 94 AA body Lebaron tail lights that you have. The smoked bottom looks so much better then the orange. Dont know what to do about the orange on the sidemarker (corner turn signal) without making it look tacky though.

I found some of those Lebaron's taillights right as the yard was closing

[mopar3.0]

you can have my tail light in a few weeks lol assuming the car does go to car heaven

thoes are my stock spirit tail lights

when are you painting the spirit? what color?