John H

Without getting into a lot of specifics, I just want to see what the consensus on a issue someone I know has.
I don't want to make the decision for this thread too complicated but any input would be appreciated. I think I know what the answer is ...

It is for an unidentified GT class track only race car.

I should note that this person of whom I speak runs alot of NASA races and not so much PCA so displacement doesn't really factor in as much. Obvioulsy there is some incentive to be competitive in both.

Geoffrey

To be competitive in a GT class, you need something more than a stock engine.

Jarez Mifkin

Plus, you need to be VERY close to the minimum weight.

Bigger displacement and stout! Where's that option?

Isn't your motor getting rebuilt right now?!?! I'm just sayin'.....

John H

Ballast is added for both GTS4 and GT4S so weight is optimized.

Middle option is bigger displacement and more stout. May have too much HP for GTS4 and GT4S (without adding even more weight) but not enough for GTS5 or GT3S.

It is mine and it is in pieces right now.

Jarez Mifkin

You don't want to be in 3R, musante is crazy fast! I would optimize for 4R as much as the nasa rules allow you to. If you are doing more nasa than pca, then that's what you should build it for.

Tom W

I paid more to have a stronger engine built than required (no performance benefit) to provide increased longevity and help save me from myself if I ever missed a shift. After 3 years, I missed a shift in the last race and hit 8200 rpm for 0.2 seconds (MoTeC is set to take data every 50 milliseconds). It appears I came out of it fine and don't have to rebuild. The engine was built to rev to 8k rpm even though the normal shift point is 6500 rpm (class rules limit displacement, intake and exhaust to put everyone at about the same power).

Pay extra to build it stronger, even if displacement is maintained.

Geoffrey

John, come run in GT3R, however, you'll have to have a very well optimized engine and chassis package to podium. Chris is very fast, AND he has so much racing experience, but that is how you learn.

38D

I agree. Run in a class with good drivers to get better. Chris is very good, and Geoffrey is learning fast! GT4 also has some good drivers, though seems to be more popular in the midwest.

Jarez Mifkin

Hell John, I take back my comment. Put a 3.8 in it with 8k rpm valve springs and titanium rods and come race with me and Geoffrey! Then we'll be in the same NASA class as well.

Joe L

When you present the options that way, I would choose the middle one.

However, the "Fred Flintstone" option is interesting for a few reasons:
1) By far the least expensive option leaving more money to do more races.
2) You would save even more money on gas, brakes, etc...
3) Your fitness level would increase, so you would feel better after those longer endurance races.
4) I may finally have a chance to be faster that you (if I get mine fixed - calling this afternoon to find out what the damage is).

JoeMag

Buy a sequential box...

btw, if ya don't mind me asking, what happened to your motor?

curious why more 'stout' motor is equated in add'l hours and not more part $'s too?

Jarez Mifkin

More stout does equal more part $'s, but it also equals more hours, which reduces the cost per hour. That's the way I look at it anyways...

John H

JoeMag

Turns out I broke a rod bolt and stretched a couple others. I am sure I did the stretching a long time ago when my gearbox failed and 3rd moved to where 5th was according to my shifter. Anyway, more stout is all about more expensive parts since the labor will basically be the same. Will you be at MO this weekend? I am going up to watch some on Sunday.

Mr Morris,
You are correct sir. Is Jarez Miflkin near Stroudsburg, PA?

Jarez Mifkin

Jarez Mifkin is located in Mifkanbul. Jarez hopes you move into 3R so he can race against you. He tells me what to say. He is my co-drover, he starts the race and I get in when the race is over when Jarez stops for tire pressures after the race so I take all of his glory once the car gets back up to the paddock. I'm too damned scared to drive the RSR!

flatsics

John,
If you damaged your crank you should consider modifying it to use the NASCAR Clevite bearings. This is not new to the aircooled Porsche/VW world, so your engine may have already have been modified.

Here is a thread on Pelican for more info.

http://forums.pelicanparts.com/showt...hlight=clevite

Another option is the Jerry Woods coated rod bearing set.

If it was me, I would build a short stroke 2.8L---nearly indestructable. Perfect for a lightweight GT4.