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Re: 2.9l street engine build

Posted: Mon Dec 04, 2023 3:01 am
by Passatman
Ok keep us posted. I am interested in this build.

Re: 2.9l street engine build

Posted: Fri Jun 07, 2024 1:36 am
by Passatman
Anything new.

Re: 2.9l street engine build

Posted: Thu Jun 13, 2024 10:02 am
by MegaRookie
Hey, no not really on the engine. Some small mods on the car. Had some issues with the tires (no grip ;-), so I changed them for semi-slicks last winter, that helped a lot I also changed the seat to a kirkey one, to not-be-all over the car.

Besides that I am also planning on a cage/rollbar and back to VW COP ignition, but mainly driving km's.

Weather has been bad here this spring, but I hope to drive the car a bit more soon. :-)

Mark

Re: 2.9l street engine build

Posted: Fri Jun 28, 2024 1:55 am
by Passatman
Ok. I am looking to plan my t4 but I don't know if i should buy an 86mm crank or do a 80mm crank with large bore. Udo Becker says his 105 x 80 t4 engines can make 300hp naturally with aftermarket heads.

Re: 2.9l street engine build

Posted: Sat Jun 29, 2024 8:56 am
by MegaRookie
Hi Passatman, with aftermarket head you are less limited compared to modified stock ones. My challenge was to build a "as big as possible engine within reasonal budget". And I had some luck that a local tuner would supply big valve heads for a nice deal and 104 bore was advised as max at that moment due to warping of the cylinders at 105 bore during machining.

But the engine you want to build all depends on what you want to do with it. Bug/bus, street/strip/track etc. And the budget that you got to spend.

Mark

Re: 2.9l street engine build

Posted: Sun Jul 07, 2024 4:51 pm
by Passatman
The engine will be a daily driver. I am thinking of going with deutz diesel liners this engine is for my 1200 beetle.

Re: 2.9l street engine build

Posted: Tue Jul 09, 2024 11:59 am
by Arnoud
MegaRookie wrote: Sat Jun 29, 2024 8:56 am a local tuner would supply big valve heads for a nice deal
Mark,

Who is the local tuner you are referring to?

Cheers,

Arnoud

Re: 2.9l street engine build

Posted: Mon Jul 15, 2024 1:15 pm
by MegaRookie
Passatman wrote: Sun Jul 07, 2024 4:51 pm The engine will be a daily driver. I am thinking of going with deutz diesel liners this engine is for my 1200 beetle.
Always a hard choice what to do when you start collecting parts. Personally for a daily driver I would go standard to max. 78 stroke, Deutz liners 100/102 bore, modified 1700 heads, Riechert or 911 cooling, single throttlebody + turbo. (Guess what I got on the shelf here for a future project ;-))
Arnoud wrote: Tue Jul 09, 2024 11:59 am
MegaRookie wrote: Sat Jun 29, 2024 8:56 am a local tuner would supply big valve heads for a nice deal
Mark,

Who is the local tuner you are referring to?

Cheers,

Arnoud
Hi Arnoud, For the 2.9 Otto vd Bergh did the flycutting for the heads, machining for double springs, and new seats + valves. I did the porting + reshaping the chambers for the correct cr myself. (Sort of 2.5 hrs driving one way local ;-))

Mark

Re: 2.9l street engine build

Posted: Sun Nov 24, 2024 3:15 pm
by Passatman
Megarookie any updates on your engine?