Potential Project Ideas Options

[senick]

I recently bought an e46 328i, which is now my daily, and decided to store my 95 ST. I did maintenance and suspension work to the 328, and was struck by how much more expensive (needlessly I believe) BMW parts are than Toyota. And I have to say, for as much love as the e46 chassis gets, I honestly feel like the AT200 is the better car to drive.

Anyway, since storing the Celi, I've been constantly thinking about a project for it (and missing its excellent fuel economy), and I was looking for some input. I should say, though, that I wouldn't likely get started on any such project for at least a year from now, likely longer.

So the philosophy of the build would be to maintain the reliability and fuel economy of the 7a, while increasing long distance driving comfort and maximizing engine power delivery through driveline and suspension improvements. Basically, in the same vein that the BRZ/FRS was designed to make the most out of a relatively low powered engine through intelligent overall car design. The emphasis is on a comfortable, fuel efficient and reliable car for driving long distances, while always having the potential to be a 'driver's' car.

I have a few ideas currently, such as:

-Lightweight driveline components, wherever possible. Are these available for the 7a? I see flywheels for the GT, but so far nothing for ST.
-Underdrive pulleys
-Lightweight wheels/ sticky tires.
-Weight reduction where possible, but not in compromising comfort or increasing road noise. Feasible?
-Lightweight exhaust
-4 wheel disc brake conversion
-Suspension upgrades. Would certainly welcome suggestions on this.
-Cooling system upgrades (better efficiency)

And more, but I'll leave it at that for now. Other than additional comments, I'd also like to know if anyone has suggestions on where to look for parts? I've done a fair bit of searching and referenced a few sticky's, but it's still hard to find parts for an ST. For 7a specific parts, I suppose I can look at Corolla sources, but for suspension and other parts I'm at a loss.

Finally, I've been wondering if it would be possible to swap a 7a into a GT body? I assume yes. I feel like the GT is more amenable to performance suspension and braking mods.

Any input is very welcome, thank you for reading!

This post has been edited by senick: Feb 23, 2017 - 9:25 AM

[senick]

Those seats are nice, and I love the direct fit. I'd certainly remove the rear seats completely; nobody I know is small enough to fit in them anyway.

Question on radiators:

What are the benefits of upgrading to a higher spec radiator? I can see if it is required for track use where extra cooling is needed for the extra engine loads, but if driving the car in normal situations, is there a tangible reason to upgrade (other than the weight savings)?

What I'm wondering is if it will ultimately increase fuel economy or not. Performance radiators claim to allow the engine to run at cooler temperatures, but weren't the stock radiators designed to let the engine run at an ideal temperature in the first place?

EDIT:

After doing some research, I don't think a performance radiator would help fuel economy, and could actually hurt it. If the computer senses that the engine is running at a temperature lower than default, it may compensate by making the AFR more rich in an attempt to bring temperature up. Probably best to stick with stock on this one I'd imagine.

This post has been edited by senick: Feb 23, 2017 - 2:19 PM