External links now open in a new browser tab - turn this off in your UCP - Read more here.

How much HP? *Supercharged/Suspension/Exhaust/Brakes - Done*

General conversations about BMW E28s and the people who own them.
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Post by John SCB »

Chris - Yeah, with the exception of the dark years 1973-1986, these cars have always been fun. Despite the solid rear axle, the handling is still great. No complaints. Check that MT article (Oct 2010) on the GT vs BMW M3.

Darin - Of course you have an open invitation to drive the car. My attorney is still in the process of writing a 40-page contract listing all pre-conditions that must be met before handing you the keys.

Mike - The video was taken with full consent of the players. However, I did get a message from youtube about a problem with using an EMI soundtrack. Good thing I didn't take D's request for that Liberace number.

Duke - It's a little rich but I still get 21+ freeway MPG if revs are kept in the moderate range. Consistent runs over 3500 rpm brings the average down to 15-18 mpg. A/F mixture at idle is perfect.
Duke
Posts: 9986
Joined: Feb 12, 2006 12:00 PM
Location: Ormond Beach, FL

Post by Duke »

John SCB wrote:Duke - It's a little rich but I still get 21+ freeway MPG if revs are kept in the moderate range. Consistent runs over 3500 rpm brings the average down to 15-18 mpg. A/F mixture at idle is perfect.
That is good....under WOT, you are rich and have some HP on the table. Any way to tune WOT fuel tables?
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Post by John SCB »

Duke wrote:
John SCB wrote:Duke - It's a little rich but I still get 21+ freeway MPG if revs are kept in the moderate range. Consistent runs over 3500 rpm brings the average down to 15-18 mpg. A/F mixture at idle is perfect.
That is good....under WOT, you are rich and have some HP on the table. Any way to tune WOT fuel tables?
Yeah, the tuner wants $500 to do it. I'm damn near broke already.
Duke
Posts: 9986
Joined: Feb 12, 2006 12:00 PM
Location: Ormond Beach, FL

Post by Duke »

John SCB wrote:Yeah, the tuner wants $500 to do it. I'm damn near broke already.
Find out what he is using for the tool, buy it, and do it yourself.
MLastovo
Posts: 1462
Joined: Feb 12, 2006 12:00 PM
Location: San Diego, CA AKA The Best Coast

Post by MLastovo »

Duke wrote: Find out what he is using for the tool, buy it, and do it yourself.
That is good advice.
If taking things into your own hand is good enough for Linus (don't ask where I got the shipping label)...
Image
It should work well for you. You have much more experience.
r/
D.
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Post by John SCB »

*Update - Supercharged/Eibach Pro-Kit suspension /Magnaflow exhaust /Big brakes* It's done.

This monster has racked up 86k on the clock. It's been my daily driver for 8 years. Since day one (with 1.5 miles on the odometer), it's been a work in progress. Roachfly deleted my account along with many of the pictures taken during the evolution of this beast.

It's still running strong, but I've decided to retire it to the stable (my garage) to be used only for occasional fun-runs and road trips when massive HP is required. Rowing of gears and wasted HP on the congested 405 is just not practical.

Image

Image

Image

Image

Image


The E34 will be my new daily driver. Thanks to all who have helped along the way.

Image
tsmall07
Beamter
Beamter
Posts: 12775
Joined: May 22, 2006 4:32 PM
Location: Springfield, vA

Post by tsmall07 »

Time to put a turbo on that car! :alright:
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Post by John SCB »

tsmall07 wrote:Time to put a turbo on that car! :alright:
That was the original plan. I couldn't convince KSK to sell me the Alpina B10 Bi-Turbo kit for the E34. They told me it would never pass smog in California. That's when I decided to supercharge the mustang instead.

Both cars burn clean, but check out how much more efficient the GT is over the E34:

Image


Image

Both cars are fun to drive. One has a stick and more balls, that's all.
Mike W.
Posts: 27403
Joined: Feb 12, 2006 12:00 PM
Location: California Whine Country

Post by Mike W. »

Image


0 PPM on Nox on a BMW??? :shock: :shock: :shock:

I've never seen anything like that, even on the newish ones I've got. The old E28 did pretty good for me and was still down to 4HC and .02CO on an unloaded test at 2500 when I sold it with 330K on the clock, but zero on Nox? Unbelieveable! :up:

Or is there more to the story? :laugh:
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Post by John SCB »

Mike W. wrote:Unbelieveable! :up:

Or is there more to the story? :laugh:
I'll tell you where my smog shop is...for a fee.

;)
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Post by John SCB »

Update on this project:

Last October I had the local speed shop install a new Centerforce Dual Friction performance clutch. I was told it was race ready and could easily handle the HP of this car. I took it back three times (starting from the day after installation) complaining about problems with pedal travel, slipping, dragging, etc. Each time I was told it was normal during the 500 mile break in period. No burnouts. I tried to get used to it. Even my gas mileage took a hit; about 3 mpg less than before the install. Two thousand miles go by. Two weeks ago the speed shop took it out. Here's how it looked:

Pressure Plate
Image


Flywheel
Image

What do you guys think?
Coldswede
Posts: 6859
Joined: Oct 10, 2008 1:48 PM
Location: Back U.P. North,. Where the water's blue, the wind is free and seasons four.

Post by Coldswede »

Looks to me that pressure plate might not be flat. Two hot spots 180* apart. :dunno:
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Post by John SCB »

Coldswede wrote:Looks to me that pressure plate might not be flat. Two hot spots 180* apart. :dunno:
Exactly. The pressure plate was severely warped. The most annoying part of this exercise was being told everything is "normal". I had to tell the guy to pull it apart. Based on my experience with this shop, I don't know if the problem was with the parts or installation. It may even have been a combination of both.

After it was clear there WAS a problem, I had them install a genuine OEM Ford clutch kit. The guy was going to charge me $300 for the reinstallation, but finally agreed to charge nothing for labor. The Ford parts were $800. Then there were problems with the second installation as well. Even guys that specialize in these jobs can't seem to do it right. With thanks to Mark from Bahn Motorworks, he fixed it. That guy is not only the best automotive tech out there, he's a great friend as well.

So, nearly $2k later the new clutch is working great. Lessons learned:
1. Don't fix it unless it's broken (or very nearly broken).
2. Go OEM every time.
As for installation: Unless you're doing it yourself or with a known expert, it's a crap-shoot.
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Re: How much HP? *Supercharged/Suspension/Exhaust/Brakes - D

Post by John SCB »

Update August 2015 -

This car rarely gets driven. I am moving on. That means this one will be up for sale. It's not a car to put on Craigslist. Maybe Barrett-Jackson someday?

Brief history:
It's a one-owner 2005 Mustang GT, Premium Package, Sonic Blue over Dark Charcoal Leather. Special order built to specification at the factory in March 2005. I took delivery of it with only 1.7 miles on the clock. Supercharged in July 2011. It now has 94,258 meticuloulsy maintained miles. It's very reliable and a hoot to drive.

It's immaculate, fast, furious and fun. Just ask Darin. He didn't think I'd be alive past 2012. I'm not even sure how much to ask for it. Maybe $20k. No real hurry to sell. Just sayin'.
Karl Grau
Posts: 9720
Joined: Mar 10, 2006 7:34 PM
Location: Sandy Eggo

Re: How much HP? *Supercharged/Suspension/Exhaust/Brakes - D

Post by Karl Grau »

Wow, I can't believe it's been 10 years already. It seems like it was just yesterday that you were creeping around the block at 10 miles per hour, Learner's Permit fresh in hand.
Good luck with the sale, what will be replacing it?

John SCB wrote:This car rarely gets driven.
I wouldn't call 10k miles a year 'rarely'. ;)
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Re: How much HP? *Supercharged/Suspension/Exhaust/Brakes - D

Post by John SCB »

Karl Grau wrote:Wow, I can't believe it's been 10 years already. It seems like it was just yesterday that you were creeping around the block at 10 miles per hour, Learner's Permit fresh in hand.
Good luck with the sale, what will be replacing it?
Yes, it was a "gotta have it" kind of purchase. After one very scary experience with the go pedal, I learned to respect the power. No regrets and amazingly, no speeding tickets either!

As for what's next, I'm looking for something more practical with adequate HP. Maybe an X5 M-Sport?
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Re: How much HP? *Supercharged/Suspension/Exhaust/Brakes - D

Post by John SCB »

With all the new Mustang talk on the board, I've decided to hold onto this one. It's too much fun to let go of.

Just picked up a Hurst Competition Plus Short Shift kit.

Image
Karl Grau wrote:
John SCB wrote:This car rarely gets driven.
I wouldn't call 10k miles a year 'rarely'. ;)
Most of the miles were driven during the first 5 years of ownership. Maybe 3k a year now.
John SCB
Posts: 1869
Joined: Feb 12, 2006 12:00 PM
Location: SoCal, on the Beach.

Re: How much HP? *Supercharged/Suspension/Exhaust/Brakes - Done*

Post by John SCB »

  
It's hard to believe it's been 20 years (this month) since I factory ordered this car. My E28's are gone, although the GT remains in the stable. From 1.7 miles on delivery to 109,420 today. It's been quite a ride. 🐎

  Image
 
  Image

  Image


  Image



 
Post Reply