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Author Topic: gas camshaft?  (Read 4266 times)

July 24, 2008, 02:38:42 pm

zaprzal

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gas camshaft?
« on: July 24, 2008, 02:38:42 pm »
does vw 8v gasoline camshaft fit 1.6/1.9 idi?
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Reply #1July 24, 2008, 02:52:34 pm

gigaz2

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gas camshaft?
« Reply #1 on: July 24, 2008, 02:52:34 pm »
not without extensive modifications, that was discussed recently.

the pulleys are completely different and the head needs to be machined so the lobes will clear.
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Reply #2July 24, 2008, 07:35:24 pm

vanagonturbo

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gas camshaft?
« Reply #2 on: July 24, 2008, 07:35:24 pm »
I must have missed that discussion. Head needs to be machined? Why?

Another note that might help with using a gasser cam is that you can section the cam pulley like many aftermarket adjustable cams sprockets are made and use the Diesel outside and the gas center hub.
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Reply #3July 24, 2008, 08:54:43 pm

foxracer1

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gas camshaft?
« Reply #3 on: July 24, 2008, 08:54:43 pm »
I too must have missed that. I would be interested if anyone knows the thread. I have done some reasearch in this but haven't gone far enough to make it happen. Much better selection of cams if it did work.
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Reply #4July 24, 2008, 09:02:26 pm

VW_Commuter

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gas camshaft?
« Reply #4 on: July 24, 2008, 09:02:26 pm »
Diesel camshafts, if I recall correctly, don't have any overlap between intake and exhaust valves while gasser camshafts do have overlap.
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Reply #5July 24, 2008, 09:31:53 pm

dieselwagen

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gas camshaft?
« Reply #5 on: July 24, 2008, 09:31:53 pm »
if this is an old topic, it means someone must have tried it out.
like to hear any actual benefit/disadvantage of gasser cam with respect to everyday driveability, mileage and power loss or gain.?

will a diesel engine respond the same way gasoline engine does with changes in valve timing? closer lobe separation? aggresive ramp profile, etc..
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Reply #6July 25, 2008, 04:11:23 am

gigaz2

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gas camshaft?
« Reply #6 on: July 25, 2008, 04:11:23 am »
it was on the other side of the forum: http://vwdiesel.net/phpBB/viewtopic.php?t=14417

there are links there for yet more info
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Reply #7July 25, 2008, 05:58:34 am

TDIMeister

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gas camshaft?
« Reply #7 on: July 25, 2008, 05:58:34 am »
I am the author of the original thread linked to on the TDIClub page.  The idea of using a gas cam in a Diesel is not my idea, nor is it particularly new; I just bothered to do some research into it. It's also not only an idea but has been tried for several years.

Shortysclimbin, who is also a member here, posted about his experiences installing a 2.0 8V cam into his TDI head.

IMO the narrower width of the gas cam sprocket is not a huge deal because the torques on the valvetrain are not too large; the width is there because of the injection pump.
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Reply #8July 25, 2008, 01:58:37 pm

hatemi

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gas camshaft?
« Reply #8 on: July 25, 2008, 01:58:37 pm »
The thing is that atleast with the cam from 1.8gti and 2.0 2e engine there are only 4 points machined to fit the head(bearings...) You can get the one that is left unfinished machined so it will actually fit in a diesel head. The sprocket is the easy part since you can make a adjustable hybrid one from diesel and gasser sprocets.
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