McArthur Boys BMW

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Postby Loren » Sat Sep 22, 2018 8:53 pm

Oooooh, now I get it. I thought you were updating us in real-time!
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Postby Tim_M » Wed Sep 26, 2018 9:32 pm

Here is an odd one...not quite the correct thread, but a previous project of mine...my old car is being advertised on Ebay. Feels a bit weird seeing it...owned 11 years, countless autocrosses, dozens of road course visits, dragstrip runs, and lots of blood sweat and tears. Of course the finale was two One Lap of America attempts with the second winning our class and 9th out of 82 cars/teams. Surprising how badly the add is written...missing all the important points! Weird though...

https://www.ebay.com/itm/1996-Chevrolet ... WM&vxp=mtr

Favorite images:

Image

and my #1...NASCAR corner at Sears Point, catching a slide with power on...(yes I was soiling my shorts too!)

Image
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Postby AScoda » Thu Sep 27, 2018 11:21 am

Somebody poke Philip.
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Postby twistedwankel » Thu Sep 27, 2018 1:14 pm

Tim,
Thanks for sharing. The guy did include all the racing records/some build sheets in the many pix attached to the ad. Apparently has all your records too. He's selling it for a dead guy in NE. Too bad Philip couldn't have just driven it home (after racing it) from Lincoln. Looks a lot different without the winning stickers. $8500 Buy now. Insurance shouldn't be more than 2 grand for a youngster?
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Postby Tim_M » Thu Sep 27, 2018 4:36 pm

Doug: you are right...I clean missed that part. Weird though...
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Postby twistedwankel » Thu Sep 27, 2018 5:30 pm

Tim_M wrote:Doug: you are right...I clean missed that part. Weird though...
What's totally weird is that you found it on Ebay :headscratch: I have often wished I could find one or two of my old cars in decent shape.
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Postby Tim_M » Thu Sep 27, 2018 8:20 pm

Actually a friend was contacted by the seller to see if they knew me and got the story...sent me an email.
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Postby Tim_M » Sat Sep 29, 2018 10:57 pm

Well, another improvement was made...and project success!

Image

Can you hear it??? On its way to a 13.27 @ 109 mph...more left in it after its first post project trip to the strip...over 2 seconds dropped!

Very proud of my assistant's work... :grin:
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Postby twistedwankel » Sun Sep 30, 2018 1:22 pm

Tim_M wrote:Can you hear it??? On its way to a 13.27 @ 109 mph...more left in it after its first post project trip to the strip...over 2 seconds dropped!
This was mind altering until I re-read your only performance mod so far. Guess the engine is still strong!! That's as fast as a C5 and only 200lbs more wt.!!

"And finally, to update the ratio to a more fitting performance 3.91 gear vice the auto's 3.23...still using the original 230,000 mile limited slip..."

Amazing father/son project!! Spending time now is better than doing time later for sure.
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Postby AScoda » Sun Sep 30, 2018 4:48 pm

Tim_M wrote:Goal is simply a refreshed M3 with a few more beans under the hood.
Tim_M wrote:Well, another improvement was made...and project success!
Pretty sure these have more to do with that strip time. Gears alone won't do that.
Tim is leaving out a few deets.
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Postby twistedwankel » Sun Sep 30, 2018 7:59 pm

http://www.wallaceracing.com/dragcalcquarter.php

Nope. 240HP/3300lb the right tires could easily do a 13.3 with around a 4:1 rearend. AND we know he replaced the power to the engine.

He's just that good!! And now he has an apprentice wizard.
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Postby Tim_M » Sun Sep 30, 2018 8:42 pm

You folks are too kind! I gave a hint...but not good audio on the video...the music of 8 cylinders beats away beneath bonnet.

We replaced this:

Image

With this out of a junk truck:

Image

Majority of the project centered around this mess:

Image

And this...full disassembly and refresh of the Chevrolet 5.3 liter L33 (aluminum block) 310 HP truck motor:

Image

Image

He laid the crank/bearings:

Image

He cleaned the pistons:

Image

Filed the ring gaps:

Image

Image

Slid the Hot Rod cam in (only upgrade on the engine...mild upgrade which returns 410 HP in this application!):

Image

Buttoning up the bottom end with a Camaro oil pan:

Image

And topping the engine with cleaned OEM heads (same head as a Corvette LS6):

Image

And slid it into place...

Image

We did back it up with a solid 6 speed trans along with an aftermarket EFI.

It will be a very fun car to learn to drive...

Ultimately, my not-yet-driving-age assistant built the engine from start to finish...most proud of that fact!
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Postby Native » Sun Sep 30, 2018 9:08 pm

AScoda wrote:
Tim_M wrote:Goal is simply a refreshed M3 with a few more beans under the hood.
Tim_M wrote:Well, another improvement was made...and project success!
Pretty sure these have more to do with that strip time. Gears alone won't do that.
Tim is leaving out a few deets.
Score!

Good stuff, Tim 'n' son!
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I'll get to it. Eventually...
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Postby Loren » Sun Sep 30, 2018 9:20 pm

Um, yeah, I'd say you left out a pretty big piece of the picture... until today. :lol:
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Postby twistedwankel » Sun Sep 30, 2018 9:39 pm

Tim_M wrote:Well, another improvement was made...and project success!

Image

Can you hear it??? On its way to a 13.27 @ 109 mph...more left in it after its first post project trip to the strip...over 2 seconds dropped!

Very proud of my assistant's work... :grin:
Nope didn't even know that was a video and even when I did watch/listen to it the red Chevy left you sittin in a pile of noise.

So there's a lot left in that engine that your son built. Damn. Journeyman not apprentice. Didn't see a GM3 coming at all. :thumbwink:
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Postby AScoda » Sun Sep 30, 2018 9:55 pm

Yeah, I thought that was just a picture also. usually a video has a big play arrow in the middle of it.
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Postby AScoda » Sun Sep 30, 2018 10:01 pm

Tim_M wrote:And slid it into place...
We did back it up with a solid 6 speed trans along with an aftermarket EFI.
Sure, no prob. Slid right into place. EZ PZ.

The simplest things never go EZ 4 ME. :*(
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Postby Tim_M » Mon Oct 01, 2018 9:40 pm

Sorry about the video...not sure why it didn't load as one would expect.

I've never attempted a cross pollination engine swap nor LS build. Both quite a bit out of my comfort zone. It has turned out better than I expected. Of course we did not blaze any new trails...many of the swaps been done previously - lots of info on forums. We just plagiarized...

The engine swap took 120 days start to finish...we continue to work out the details.

It will run in the 12's as it sits once we add a tachometer (shifting on the speedo is not easy), add more than 38 psi fuel (supposed to be 58!), cooler temps, pull the spare, something other than aged Firestone radials, etc.

Would like to get it to a dyno and then autocross before the snow flies (for us).

Pretty amazing what you can buy for $1400 - all aluminum 410 HP engine (when you add a camshaft). Weighs the same as OEM 6 cylinder/automatic combination (3237 no fuel/people). I'm a believer in the E36...
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Postby twistedwankel » Tue Oct 02, 2018 11:13 am

Tim_M wrote: something other than aged Firestone radials, etc.
:rolling: Well that explains a lot.
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Postby Tim_M » Tue Oct 02, 2018 5:08 pm

A better video:

phpBB [media]

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