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Author Topic: vnt25 on a Tdi-m  (Read 12999 times)

Reply #15March 06, 2007, 03:57:27 am

DA-BRT

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vnt25 on a Tdi-m
« Reply #15 on: March 06, 2007, 03:57:27 am »
Sorry Guy's I've been away for a while (more important personal things)

This weekend I'm driving north to pick-up the fuelpump and make a copy of the dynoplot.

The engine had been taken appart by the owner to check for status.

@Malone: I took out almost the complete swirl chambre. I gained about 60% more flow.
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Reply #16March 06, 2007, 10:53:50 pm

935racer

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vnt25 on a Tdi-m
« Reply #16 on: March 06, 2007, 10:53:50 pm »
Bert, any chance you could get pictures of the manifolds and the audi drivetrain stuffed in that rabbit? How much rpm are you spinning with that 14mm head?
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Reply #17March 07, 2007, 05:00:40 am

DA-BRT

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« Reply #17 on: March 07, 2007, 05:00:40 am »
@935racer: It depends on where the engine is at the moment. I know the took is apart to check the internals. But I don't know if the allready put it back together.

Pictures of the parts in te Rabbit are not a problem.
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Reply #18March 07, 2007, 05:10:05 am

shadowmaker

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vnt25 on a Tdi-m
« Reply #18 on: March 07, 2007, 05:10:05 am »
DA-BRT: Any Bosch number for that 14mm head?

I still have little swirl left, because I thought it will be better for mileage as my van is in everyday use.
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Reply #19March 07, 2007, 05:50:59 am

DA-BRT

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« Reply #19 on: March 07, 2007, 05:50:59 am »
@Shadowmaker: After this weekend I got the pump back for changing. I can't remember that there was a number on the plunger/head. But I closely look at it. I bought this head from Ebay.de and I didn't said it was a Bosch head or another make.
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Reply #20March 07, 2007, 11:34:50 am

Benjamin

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« Reply #20 on: March 07, 2007, 11:34:50 am »
i wonder if Bosch ever made a 14mm plunger, i thought its only after market

Greetz, Benjamin
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Reply #21March 07, 2007, 09:50:32 pm

RabbitGTDguy

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vnt25 on a Tdi-m
« Reply #21 on: March 07, 2007, 09:50:32 pm »
yah, I'm wondering as well. I believe I had read/looked elsewhere and Bosch only made up to a 12mm unit. I believe the only 14mm heads I've seen on the aftermarket were the chinese ones...

Joe
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Reply #22March 07, 2007, 10:06:21 pm

935racer

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vnt25 on a Tdi-m
« Reply #22 on: March 07, 2007, 10:06:21 pm »
Bosch does in fact only go up to 12mm. I have a 14mm head that I bought from dieselspeedshop.com but I havent installed it yet. How high did this pump rev that you built? I am worried about siezing mine. Also what was the reason for engine dissasembly.
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Reply #23March 08, 2007, 04:00:06 am

DA-BRT

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« Reply #23 on: March 08, 2007, 04:00:06 am »
@935racer:

The engine is still in his brake in period (i don't know if I describe it correctly) The shiftlight was set at 4500RPM. In the sixt gear it went through 5000RPM easily.

A temperature gauge on the pump would't be any luxury.

The reason for dissasembling the engine was becayse of all the new parts and a racespec. build engine. It's very standard to take it apart after 1500 / 2000 km to check wear marks.
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Reply #24December 19, 2007, 02:30:30 pm

malone

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vnt25 on a Tdi-m
« Reply #24 on: December 19, 2007, 02:30:30 pm »
More updates! How's the engine running?

Since removing the complete swirl chamber almost completely, how smooth is the engine at low RPMs?

Pictures and dyno?
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Reply #25February 22, 2008, 12:24:46 pm

Helliouse

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« Reply #25 on: February 22, 2008, 12:24:46 pm »
Bump...this is to good not to...
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