Bernie930

How much HP over a GTS 3.8 with a proper tune?

1BlinkGone

That is fabulous news. Will contact you when ready! This is exciting! Thanks.


A 4.0L Cayman is enough to make your nostrils flare...

cds4402

If you decide to do this, please start a build thread about it!

BGB Motorsports

Hi! You must be Morgan's dad. I figured you would like some photos of the project. We have removed the 987.2 3.4L, we have ordered the 3.8L and we are removing the cylinder heads for porting once that motor arrives. We are essentially making a BGB X51 swap for Morgan. He's getting all hard bushings in the drivetrain, headers, flash and one heck of a new paint job. For now, the car can go to the body shop for paint while we wait for the arrival of the 3.8L, send off the cylinder heads for porting and await the arrival of the exhaust manifolds.

I have some photos below.








I called Morgan last week to see if he wanted a baseline dyno so that all of you guys can see what you're getting for your money. She made 305rwhp which is just what a 3.4L makes. Actually, that motor is probably pretty cherry since she should have dyno'd right at 300rwhp. We hope to return with 390rwhp PLUS.

Stay tuned!

TRAKCAR

Fascinating stuff, a 4.0 Cayman 987.2.. In a future with many used cheap 981 Caymans I see an industry in the making..

I'm not technical enough to ask these questions, but here goes anyway.
So, if a DFI 3.4 981 comes with a 6 speed manual.. Does that mean the 3.8GT3 dry sumpish DFI motor fits a 6 speed manual as well? What would happen if you make that 4.0?

Florida still has smog?

I plan to put a 964RSA race car on plates next week. If it has a VIN and we have a title, we get plates no?

Schmidts Cat

Thanks for the update and pics. Keep us posted on the build.

viggen

Beautiful car!

skxf430

BGB,

You need to please open up a shop here in SoCal.

BGB Motorsports

I would, but my mom would disown me!

You have two options : 1.) send me your car and we will send it back post-conversion. My fabricator lives in AZ. I can have one of the many BGB friendly shops troubleshoot the car for you with my guidance or you can take it to Arizona. 2.) Do option 1.

TRAKCAR

So..

3.8 C2S motor and brakes..Done.
How about the GT3 3.8 engine with a manual and the GT3 brakes?

475HP 6 speed manual, can it be done?
Does it matter if you start with a Cayman or Cayman S?

hf1

A post on the previous page suggested that Porsche wouldn't sell the 991 gt3 engines separately. It would have to be sourced from a wrecked donor. Plus, they have those engines in intensive care right now ("stop sale, stop drive") trying to figure out why they burst into flames.

Marine Blue

With the price of the 05/06 Caymans and Boxsters coming down and with the potential IMS issue this may be a really good alternative. Can't imagine what a 4.0 in a small package could do

Hothonda

Good article in Excellence Magazine:

http://www.excellence-mag.com/issues...s#.UwoXsih8O5Q

rflavell

I read this article today and was puzzled by the last sentence where they state the GTS 3.8 x51 engine generates 450 Hp. I thought the 3.8 X51 made 408hp with the same amount of torque as the standard 3.8. Is the article incorrect or is this possibly after Deman mods the engine?

Cloudspin

The CTSCC Gran Sport regulations require the GTS 3.8 to be stock (408 hp) and they are sealed by the sanctioning body to eliminate performance enhancements. You're not allowed to race if the seal is broken. These regs would apply to the Rum Bum 2013 championship winning car driven by Nick Longhi referred to in the article. BTW, the stock GTS motors are also used by other Gran Sport teams which is a testament to the strength and reliability of the 9A1 motor.

The same engine regs do not apply to the DeMan Cayman builds described in the article freeing DeMan to tune the motors for higher levels of performance, as I understand it.