Koenig928

After countless hours of work, the engine in the Koeing car is finally back in, with many thanks to Darien for helping me lift it back. I still have buttloads more work to do, but at least the motor fired right up, only took two tries to get it going.

Waiting for a new MAF to show up today, the old one was WAY out of wack, registered between 16.0-17.0 on the LM-1 - way too lean. Swapped MAF's with the S4 to verify its condition, idled much better. Ran everything up to operating temp, no leaks except for a few drops from a coolant sensor (now corrected).

Still have to install the fans, wiring, breather, etc, so the picture below is NOT done yet. Had to redo the external oil cooler and lines, which was a beyotch, made up custom brackets to fit it all securely.

Next job is to setup John Speak's Sharktuner with the 42# injectors. (thanks John!) Hopefully I'll get everything done in time for Sharktoberfest this year I've been working on this thing late night for the past few days, I think my fingers are starting to get arthritis, but nothing a few beers won't handle!

For those that don't know, this motor is the one with the mix of different parts in it:
'88 block
GTS crank
Modified GTS pistons (bowled out to lower compression, which is ~9.3 : 1)
S4 Rods (5.0L)
Albrex S/C setup, about 6-7psi boost, no intercooler

Fueling originally was the stock 19# injectors, stock regulator, with the addition of a 9th injector located on the intake for extra fuel under boost. I never liked this setup, so it went bye-bye.

AND, for the laundry list of crap that was WRONG on this engine that I discovered and corrected. Whoever was into this motor before didn't know or pay attention to what the hell they were doing.
- thermostat oil spring missing
- Cam bearing bridges were ALL installed backwards on both heads (still fuming about that one)
- No flappy actuator, valve lever was frozen shut from all the powder coating
- Oil pan was severely warped from the huge weld spot under 2/6 bearing journal, didn't fit right.
- Pistons 1-4 installed upside down (but doesn't really matter since piston dimensions are identical)
- Some bozo used a chemical fire extinguisher at some point - that left some real nice residue on all the metal parts....lots of cheap-o spray paint on the block/head to hide all that corrosion to the aluminum.
- Oil cooler plugs on the block were overtightened, and destroyed threads on one hole, sealing surfaces on both. (have some nice shots of that one)
- lots of other little s#!%

Back to the garage, I'll post more pictures soon.

Fabio421

lookin' good I realy like the car

Mike Frye

That is a thing of beauty!

Darien

Bill,

Congrats!! Definately a job worth patting yourself on the back for

hlj821

Congrats!!!! Darien does com in handy. We will meet at 9:30 AM on Friday, October 20 at I-15 and Blue Diamond. I can't wait to see that machine go down the highway.

SwayBar

What is the resultant deck-height while using the S4 rods with the GTS crank and pistons? I wasn't aware one could mix and match that way.

I know there is a wrist-pin offset on the S4 pistons which makes a difference in which way there are installed: one arrow points to the 'drive belts', and the other arrow points to the intake valves. Are the GTS pistons different in this regard?

whitefox

It looks beautiful, but why do you have so many mixed up colors in there? Purple, Red, blue?

Tony

way to go Bill! Im very happy for you...awesome!

Normy

That's quite an oil cooler setup. Where did you find those particular parts? I notice the fan is thermostatically controlled too, or is that an oil temperature probe?

Very cool work!

N!

Barry Johnson

Wow, "it is nice!" (Borat voice)

Good work!

RyanPerrella

do you have ducting to get the the front of the oil cooler? Is there space for air to get to the front of it ? I need to replace my wheel well covers so i havent been in that area of the car yet.

Koenig928

Practically zero, the pistons are flush with the deck. Koenig Sp. in Munich originally built this motor ~14 years ago, they really knew what they were doing mixing these different parts. The GTS pistons have a shorter wrist pin-to-top measurement, that's what make up the difference in stroke. The S4 and GTS rods are exactly the same length, however the powder cast S4 rods were apparently more stout (and heavier) than the GTS rods, which are slightly thinner and less robust. Guess they thought it would work best on a boosted application.
I don't think so, the stock GTS pistons have the same markings on top as the S4 pistons, the "E" for exhaust side, an arrow for intake, and the "KS" stamp. Since these pistons were put on a lathe and bowled out, only the "E" remained on the very edge, so that's how I could tell they were installed backwards. And I'm guessing they were originally installed that way. Why, I dunno. But given that their dimensions are exactly the same on exhaust and intake side, I guess it really doesn't matter.

Koenig928

Well, it's from the previous owner and his mechanic did all the crazy powder coating. Strange taste, I agree. Even though the color scheme is not exactly my flavor (esp. purple), its kinda grown on me. I could have done different colors while it was all apart, but decided not to mess with it. The purpose of tearing it all apart was to make it run correctly, which it had not been doing for a very long time.

Koenig928

The oil cooler is a Mocal 34-row, got it from BAT Industries in Sarasota (I think). The SPAL fan from Racer Parts Wholesale.

Thats a temp sensor on the 3-way tee, it runs to a VDO guage inside. The fan is manually controled from a simple flip switch under the dash, so I have to watch the oil temp. I'd like to install an auto controller for that eventully.

Koenig928

It gets enough ducting, the front airdamn has a real wide slits molded on it. But the front end has been significantly modified from the body work. The oil cooler is almost too big, I had to cut the old front fender under the fiberglass to make it fit.