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Very nice I am looking forward to your report. Be careful with the loud pedal coming out of the curves. I know by experience !

Let us know how much of a turbo kick you get

Have a great time!


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Cayman The Destroyer!
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Discussion Starter · #462 ·
Jaime, both the track and the car are new to me so you can be sure I will be prudent. As I remember it the power curve is very smooth and easy to modulate. Vision will be there so I have a built in professional crew to work with me if I have issues.
 

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Great let me know what tire size you will be using and what set up you end up with the adjustable sway bars. If you know the spring rates even better.


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Here are some engine porn pix of the X51 intake manifold modified for use on my 4.0L turbo. Vision has done this before for a supercharged engine. I can't believe the welding done to alter the throttle body mount angle. Omar is a magician with the MIG.


I'm really interested in seeing what the power curve will look like with the X51, larger throttle body and better headers.
Love the X51 Manifold. You can really see a difference in the dyno chart. Much better air delivery.
 

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Cayman The Destroyer!
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Discussion Starter · #465 ·
I was pleasantly surprised by the 50+ HP increase at low boost! Less back pressure from the headers + better flow from the X51 makes for a happy engine!
 

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The car is ready for a DE this weekend at auto club speedway. Attached is a before and after dyno on low boost. Even thought the latest mods (collector style headers, X51 manifold and larger throttle body) where made with durability in mind, there is a very nice power gain above 5,500 RPM. We will dyno at high boost next week.
Looking forward to seeing you and the car on track this weekend.

Cheers,
 

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glad to see that the x51 manifold helps. I picked up a set of upper and lower x51 manifolds for my m96 motor.

did you port match the head to the x51 manifold?
 

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Cayman The Destroyer!
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Discussion Starter · #468 ·
Sometimes the prettiest one is not the best choice in women or car parts! LOL The dark line in the picture is not magic marker but a nice fracture courtesy of a wicked pot hole on the edge of the track. The manifold is being re-welded and reinforced to prevent a recurrence.

I managed to get 5 run sessions in and man was I rusty! My very old tires where interesting as well. Felt like they where dipped in oil! Big thanks to Dwain Dement for right seating with me.

No port matching done on the manifold.
 

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Cayman The Destroyer!
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Discussion Starter · #470 ·
The fabricator removed too much material when he ground and polished the manifold after welding the flange back on. The revision is not as pretty but much stronger. I'm not happy about it but it is what it is. Good planning that Vision was there and trailered the car.
 

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how in the world did the pot hole cause it to crack? eeehhh, I would be pissed
He's got a turbo setup, just guessing, but to me that would mean Diverdog's now got a lot of hardware tied into, and at least partly hanging off, or at least onto. his intake manifold, connected by somewhat less than as flexible as the old OEM plumbing, boost rated silicone hoses & clamps. Shock travels; the intake is no longer completely independent of the the exhaust plumbing etc. Big bumps are going to pull on a lot of things.
 

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well I sure hope it works out with the fix. I'm sure they added just a tad bit more material when they re-welded it back. :burnout:

my buddy has a 1300whp turbo c5 vette and he put a nice 5" crack through the plastic LS intake manifold but I believe it may have been dropped before the install and put a hairline into it and then with the 20psi from the singe 88mm turbo it just opened up.
 

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Discussion Starter · #473 ·
I'm not worried, the re-welded manifold will be plenty strong, just not as pretty! LOL The inlet from the turbo has a silicone hose just before the throttle body and allows good flexibility. Pretty sure it wasn't boost related as we where only running 7psi.
 

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Discussion Starter · #474 · (Edited)
All ready for parade and Laguna Seca. Like everything else, fitting and exhaust that will meet the noise requirements was not easy. Dwain and team at Vision came up with a rather elegant solution that will easily pass. Without the Super Trapp it measured 85db at 20'



The system bolts on and I can revert back to the TPC turbo back system if I'm not planning an excursion to a noise challenged track.
 

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Cayman The Destroyer!
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Discussion Starter · #477 ·
So far my trip to Monterey for Parade has been good. The new suspension has 50% higher rear spring rates but it is not bad unless the road is really rough. Can't wait for the Laguna Seca DE this weekend!
 
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Discussion Starter · #478 ·
I had a nice trip to Monterey for parade and the following DE. The car is pretty stiff but bearable on decent roads. On the 5 it was not a lot of fun though.



It was great to finally be able to drive Laguna. The car handled great and nothing on the engine broke! LOL I did have an issue with the brake vacuum pump. When we added the extra oil scavenging pumps the engine driven vacuum pump had to be removed. Vision installed an electric pump that works fine on the street but at Laguna it overheated and started to make very loud noises. No brakes at Laguna is a pretty terrifying thought so I bagged the second day.



The run group I got stuck in was crazy. Lot's of inexperienced drivers and the closing speeds where ridiculous. It was hard to get any kind of rhythm so I lined up at the front and within two laps I was lapping the slower cars!



The car is at Vision getting a more robust vacuum pump and the TPC magic PASM computer and 3 axis accelerometer installed.
 

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Good to hear you have enjoyed your car. I have not seen much of you around these boards. What spring rates were you using?

Since I do not have any scavenging pumps I should not have any problems with the brake vacuum pump.
 

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Discussion Starter · #480 ·
Jaime, I've been traveling quite a bit and have been working on getting my garage "man cave" ready to build my Factory 5 818R. I put in power circuits for a lift, heat pump, air compressor and convenience outlets. I'm just finishing up the garage door high lift kit and opener. Running low voltage cable for security cams, LAN & entertainment system. Will be blowing in insulation for the walls & ceiling next week. The lift will be here shortly as well. 818 kit is due second week of August. Man the AC sure makes working out there more pleasant!

I believe the springs are 600lb rear 450lb front.
 
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