Mark's 1G Winter Projects

[santa]

Originally Posted by Mark Leasure

Thanks! Enjoy the drive! I might be starting my Evo this weekend!

Sweet!! Give me a call I'd swing by!!

[Mark Leasure]

I was thinking of changing cam shafts. I’m currently running Brian Crower 280’s. I was on a shoe string budget when I purchased these. I’m sure that they are a bottle neck. I have yet to research this tho.

I’m thinking of using GSC S3 or Kelford 280’s. I don’t know??? Any DSM’s with experience on cam selection with big turbos, 67mm and up? I would like to improve the Time/MPH or run a little less boost and keep it in the single digits.

[Mark Leasure]

Oh yea the update. I'm still waiting on Shep to get the new batch of gears in for my TX case. They said that they need a set for the shop car too. I'm patiently waiting, and have been since October.

If it goes any longer I will need to source a factory yoke and 23 spline case to get the car running/racing.

[turbotalon1g]

Give a call to english if you are considering those GSCs from what I gather they work pretty closely with GSC in developing cams for mitsus.

[Pushit2.0]

I have a factory yolk in a box, let me know if you need it.

[Goat Blower]

There should be a lot of power left on the table with the BC's, the design on those is old as dirt. I'd also look into the bigger FP cams as well as the GSC's.

[Pushit2.0]

I run Crower 288's (stage 4). They are degreed in on a 111 deg lobe separation. Max lift I .415" E .398".

With your 2.3 9500rpm and big turbo you will want the biggest cams that will fit. Motors are air pumps and if you can not get air in/out you will be hard pressed to make power.

Idle and down low throttle will suffer but the extra power is worth it.

It would be cool to see your 1g dyno graph overlaid with my car from the dyno day last year.

[Mark Leasure]

Originally Posted by Pushit2.0

I run Crower 288's (stage 4). They are degreed in on a 111 deg lobe separation. Max lift I .415" E .398".

With your 2.3 9500rpm and big turbo you will want the biggest cams that will fit. Motors are air pumps and if you can not get air in/out you will be hard pressed to make power.

Idle and down low throttle will suffer but the extra power is worth it.

It would be cool to see your 1g dyno graph overlaid with my car from the dyno day last year.

I agree it’s worth the loss of idle, it’s a race car. It’s going to see less and less street time, since the my Evo is taking its place as the preferred street monster.
The only dyno graph I have is from the mid 30 psi pull, think it was around 780-790WHP? MAP should easily set up an overlay, they have both files on their PC.

Originally Posted by Pushit2.0

I have a factory yolk in a box, let me know if you need it.

I will let you know, I think I may need to get an OEM driveshaft too, I'm running the DSS 3.5". I called Shep again about the TX upgrade and they are shooting for next month, I guess ER is also making one now too.

Originally Posted by Goat Blower

There should be a lot of power left on the table with the BC's, the design on those is old as dirt. I'd also look into the bigger FP cams as well as the GSC's.

Yea, should be some good power to be had, The old spool to 40psi was quick, around 5900-6000 in third, on a 76MM turbo. I know I'm going to be giving some of that up, but like John said it’s worth it.

Originally Posted by turbotalon1g

Give a call to english if you are considering those GSCs from what I gather they work pretty closely with GSC in developing cams for mitsus.

Yep the S3 is what they are using on Jeff B's car. MAP has a set waiting for me to pick up. When I go there I'll try to get some overlay graphs of the dyno runs too.

[turbotalon1g]

Contact english about their brace for T-cases. They should be out now, Jeff bush is making them/head of them. But I know they have a few ready.
I'm gonna explode a case first.

[munchgsx]

Blue is the EVO
Red is the 1G
Green is LaCroix's Galant

[niterydr]

Originally Posted by munchgsx

Blue is the EVO
Red is the 1G
Green is LaCroix's Galant

To bad the map sensor on the dyno day was showing 12psi more than what John's Galant was running. That extra displacement helps. , much more under the curve for the 1g and EVO.

[Mark Leasure]

John's car makes over 800 for almost 2000 RPM, Nice.Yea I remember that MAP sensor issue, before my car broke on the dyno it showed something like 57psi! Haha. My AEM Log showed something around 44-45psi. This chart tells a good story of how F’ing crazy my evo is, period.

[Pushit2.0]

That green run was at 40psi even, and the rev limiter would have been 9800rpm.

[URV8SUX]

Originally Posted by munchgsx

Blue is the EVO
Red is the 1G
Green is LaCroix's Galant

Holy shit I wonder what the red graph would do at 10psi cause it make 800 with .65psi!!!!!!!

[FattyBoomBatty]

Looks like you could match the 1G with the Evo and 500 more RPM and maybe some tweaking. The Evo looks amazing!

[Mark Leasure]

Originally Posted by FattyBoomBatty

Looks like you could match the 1G with the Evo and 500 more RPM and maybe some tweaking. The Evo looks amazing!

I think the 6266 is out of breath at that point, who knows what the curve would look like with 500rpm more. It uses the same IDC from 7700 to 8500rpm if that means anything.

I wish I had a dyno number on the 1G with 40+ psi, I don’t think the 4202R was in its sweet spot yet at 35 psi on that chart.
Who knows it’s all speculation anyways...The shit runs 9’s at 155+, I’m happy, I just want a transfer case now…Get it to the MAP event and have fun!

Oh and I picked up the S3’s too.

[2Point3TSi]

Man threads like this really make me wish I would have held into my Talon just a little longer so I would have time for it. Amazing car. Work looks second too none.

[Revobasher]

So you are on stock transfer case and non built trans still on Evo?

[Mark Leasure]

Originally Posted by Revobasher

So you are on stock transfer case and non built trans still on Evo?

Built ultimate ration trans from Jacks with a 4.11 final drive. MAP spec beast mode Xfercase with a wavetec front diff.

[Mark Leasure]

I’m not going to count on an upgraded T-case anymore. The 1G should make it to the MAP proving grounds with a stock transfer case! I just ordered my yoke conversion to adapt a factory case to a HD DSS 3.5” drive shaft. The off the shelf format from DSS is meant to only work with an upgraded T-case.

Now I need to:
· Tear into the motor to take out the BC280 and install the GSC S3’s
· Replace the timing gear and the keyway on the crank since last time the keyway groove was worn.
· Remove the upgraded TX-case that grenaded.
· Install the new fabricated yoke and factory Tcase.
· Street tune WOT (hopefully the cams will help hold power out further in the band)


The car should be running in a week or two, as normal in the nick of time for the event!

I’m sure it will be hot off the street onto the trailer and heading out to BIR.

Happy days again! Just shooting to get one clean pass in, haha.