MyE28.com

Oohh. Didn't think about that.

So basically it's a total guess at what it should
supposedly be making if there was xx amount of factual
drive-train losses..

The first driving and a driftday is done with the 537iT! The power/torque is unbelievable! It is now running on 14 psi because the boostcontroller is not working, we will get a new one soon.

Drifting went fine too, we can spin the tires in 4th gear all the way to the rev limiter and leave marks as long as 1600 feet!

Hey Jelmer,

What do you use for a low pressure pump? The original in tank pump?

Yes, we use a new OEM in tank pump that pumps the E85 to a swirl tank which feeds 2 Bosch 044's.

Jelmer538i wrote:Yes, we use a new OEM in tank pump that pumps the E85 to a swirl tank which feeds 2 Bosch 044's.

Do you think an in tank pump feeding directly into the dual Bosch 044's would work also? Do you have a picture of your swirl tank setup?

I don't know if it would work without the swirl tank but getting one of these is always better for a E28 because they run out of fuel when cornering hard and with a half full tank.

Today we did some trackdriving with the 537i:

http://www.youtube.com/watch?v=TndXA_2rzpI

Extremely impressive numbers. When you say TCD 745i turbo is that the k27 with the garrett 60 trim?

The swirl tank was a good idea to address hard cornering fuel starvation at < half tank. However, you're doing yourself no favors by using the OE in-tank lift pump (externally?) then dividing the line (apparently same ID) to the two 044's. Most likely the lift pump (Walbro?) is only adding restriction since the 044's can only flow what whatever fuel the lift pump provides, like trying to pull fluid through a clogged filter. Better to ditch the lift pump and increase the ID of all your fuel lines. Looks like you're using full-flow fittings, which is definitely helping with flow. With a single 044 rated with sufficient capacity to feed 600-700hp you likely aren't as yet pushing those limits. What filtering are you using?

The 537i is going to be tuned for 100% bio-ethanol and finaly gets a working boost controller so we run 1.2 bar turbo pressure.

those 1600cc injectors should be able to flow close to 1000 whp with enough fuel pumps and pressure behind it.

After a busy time this E28 gets some attention again. The DTA engine managment is going out because it is very complex and very, very hard to get tuned properly. A Microsquirt is going to do the job now, because the tuner has alot of experience with these. He also puts a bio ethanol sensor in it so we can run regular gas and bio Ethanol. The boost controller is already installed. When everythings is ready I'll make some pictures and a vid.

Some vids of the testing on pump gas:

https://www.youtube.com/watch?v=yTVv2fcM6L0

https://www.youtube.com/watch?v=SSpiKAtj7q4

Next week the final tuning on 17 psi.

A new headgasket (actualy it's piramid ringed now) and a bio ethanol sensor and now it makes these numbers:

650Hp and 833lb/ft

Dyno print will follow.

Haven't updated this for a long time but a lot has happend.

New block (M30B34)
New Wiseco pistons
New turbo: Garret GTX42 dual ceramic ballbearing turbo

Old setup with the KKK K27 TCD turbo:





The engine is currently build but this is the new turbo:

are you using a twin cam head on an m30b34 block?

That is a Big Fucking Turbo. I approve. Looking forward to a dyno to see what the power curve looks like.

What are you seeing for IAT?

marc79euro645 wrote:are you using a twin cam head on an m30b34 block?

A lot of europeans like to do this since it's cheaper than a S38 block.

I thought there was a difference in the front timing covers that would not allow them swap.

@Marc: Yes, no problem bolting it on. Only some minor difference like the oil return from the head and the chain guide pin.

@George: the turbo can support 1000+ horsepower so that is our goal.

@Nebraska: I'm not sure on the old setup.

The current 6 speed Getrag 420 will be swapped for a ZF gs6-53dz gearbox because these are strong, cheap and readly available.
The Getrag will be for sale.

In for more. :Wow:

This is really cool. How will you adapt the ZF gs6-53dz gearbox to mate to the s38?

We will weld a new bellhousing on it after both are machined.

Coming along nicely:

I was wondering about this, looks good!

ya, that turbo should work well.... for big power #'s

Almost there! Right now we are working on the 4" exhaust and the 3" turbo --> intercooler --> intake tubing.



Offcourse the innerfender will be closed again...