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4-Valve DOHC engine

Posted: Wed Nov 14, 2007 6:03 pm
by bugat5speed
Hi together,

I am currently in the status of building a 4-valve DOHC-flat 4-engine. I have engineered a complete new cylinderhead plus camboxes, manifolds, etc...
I do this project together with Robert Bernauer from RMB www.rbernauer.de.
The engine will be based on a crank with 5 bearings and so will easily stand the high revving that we expect.
We are sure the engine will easily be around 90 PS per 1000cc. Biggest capacity will be 2.500 cc. I want to install it into my 914, Robert wants the first into a Beetle.
In a few weeks the first heads will be casted. Now that I have my own milling centre and CAD/CAM it will be much easier to bring the project forward. Will keep you posted on this matter.

Try to attach some pics, but don´t know if it works.

http://www.bugat5speed.de/cms/content/v ... 1/lang,de/
(could only make this link to my site with info on)


Martin Bott
Bug @ 5-Speed
www.bugat5speed.de[/url]

Posted: Wed Nov 14, 2007 7:11 pm
by defianty
Sounds like an interesting project, looking forward to seeing more.

For info on posting pic see here...

http://www.ddk-online.com/phpBB2/viewtopic.php?t=3864

Posted: Wed Nov 14, 2007 7:49 pm
by Bob_Salmon
Interesting stuff Martin. I can't read German but the pictures look good.

Bob

Posted: Wed Nov 14, 2007 7:54 pm
by bugat5speed
sorry to link to another forum, but I didn´t get it working to install pictures. Thanks for the tip, but it didn´t help. Hope you don´t mind me making the link to the german PFF, but wanted to give you an idea how the heads look currently.

Martin

http://www.pff-online.de/wbb2/thread.ph ... id=2665897

just saw that you have to lock in there also to see the pics. sorry!

Posted: Wed Nov 14, 2007 7:55 pm
by Nige
go to the home page Bob and there is a Union Jack image, click on it and the langauge changes to English.

Posted: Wed Nov 14, 2007 7:57 pm
by bugat5speed
not everything is in English yet. Unfortunatelly the project isn´t either.

Martin

Posted: Wed Nov 14, 2007 10:33 pm
by Bob_Salmon
Nige wrote:go to the home page Bob and there is a Union Jack image, click on it and the langauge changes to English.
:oops: :oops: :oops:

Bob

Posted: Thu Nov 15, 2007 9:32 pm
by Derek
Will you have different cams and valve sizes available?

Looks like a nice product 8) .

Posted: Fri Nov 16, 2007 7:54 am
by Gary71
Great project, best of luck with it :)

Photos from the site:

Image

Image

Posted: Sun Nov 18, 2007 10:46 am
by bugat5speed
Hi,

if the project will be successful we will surely have different cams and valves. But let´s do one step behind the other.

Thank you all for you interest in this project.

The first heads will be casted early in December, then we will have them milled on my centre. Then I hope to show you a little more.

The camshaft drive plate (don´t know the correct name for this) is being done at the moment and will be finnished within the next weeks.

Will keep you posted, if you like.

Martin

Update 4-valve DOHC-engine

Posted: Wed Jul 09, 2008 8:53 am
by bugat5speed
Hi,
wanted to give you an update on the 4-valve engine.

The second batch of heads were casted after some changes were made to the mold. Finnished milling them about three weeks ago and now they are at Robert Bernauer (my partner in this project) for accomplishing and flowbench-testing. Then a first engine will be built. The engine will look like an old Carrera engine (Fuhrmann 4 cam) and we will have a similiar cooling system. I hope to install such an engine in my 914, which I´ve started to restaurate in the meantime.

Can not add pictures here. Can anyone of you help me? I can send you a picture (which size?)

Martin Bott
Bug @ 5-Speed
Germany
www.bugat5speed.de
info@bugat5speed.de

Re: Update 4-valve DOHC-engine

Posted: Wed Jul 09, 2008 9:22 am
by defianty
Martin take a look here for instructions to posting pics.

http://www.ddk-online.com/phpBB2/viewtopic.php?t=3864

If you still can't then send a pic to stv1701 at blueyonder.co.uk and I'll post it up.

Really looking forward to see this project.

Posted: Wed Jul 09, 2008 2:36 pm
by defianty
Here the pic Martin sent me, looking very nice.

Image

Posted: Wed Jul 09, 2008 3:14 pm
by Nige
They are the cat's pyjamas

What's the plans for driving the cams? Belt driven off the crank pulley or a chain driven setup?

Posted: Thu Jul 10, 2008 9:16 am
by bugat5speed
Hi Stephen,

thanks for installing the picture!

the cams will be belt driven. Have less problems with them than with chains.

Martin Bott