914-6 setting timing, How do you get to it? Options

[bfrymire]

This may seem stupid.. But, I went to check the timing, and I can't get to it. The timing marks are right up against the firewall. So, is there some trick to it? And, I hope you don't have to crawl under a running car to get to it...

-- brett

[ArtechnikA]

The timing marks are right up against the firewall.

Ahh - no.
There are TDC marks on the crankshaft pulley, but they are intended to be used when setting valve lash.

The _timing_ marks, which include TDC and 35º BTDC, are on the _flywheel_ and are visible through a notch in the bellhousing.

[bfrymire]

The timing marks are right up against the firewall.

Ahh - no.
There are TDC marks on the crankshaft pulley, but they are intended to be used when setting valve lash.

The _timing_ marks, which include TDC and 35º BTDC, are on the _flywheel_ and are visible through a notch in the bellhousing.

ahhh. (smacking my forehead). The picture in my book, showed the pulley.

thanks!

-- brett

[bfrymire]

Which brings on another question... I have a 2.7l, with cis converted to megasquirt. The spec shows 5 atdc initial and 38 total. Is this what I should be using?

--brett

The timing marks are right up against the firewall.

Ahh - no.
There are TDC marks on the crankshaft pulley, but they are intended to be used when setting valve lash.

The _timing_ marks, which include TDC and 35º BTDC, are on the _flywheel_ and are visible through a notch in the bellhousing.

ahhh. (smacking my forehead). The picture in my book, showed the pulley.

thanks!

-- brett

[ArtechnikA]

Which brings on another question... I have a 2.7l, with cis converted to megasquirt. The spec shows 5 atdc initial and 38 total.

Well, yes, that's another question, but it is not the essential question.
The essential question is: are you sure you've got a 914/6 flywheel?
'Cause 911 flywheels don't have timing marks on the flywheel...
If you're using a 911 flywheel, it's smart to put the timing marks there before mating the transmission, using a known TDC and a degree wheel.

I can't really answer the rest, but I expect it will depend on whether or not you are using the stock distributor and have appropriate vacuum sources for whatever it needs. And there's a few different kinds of 2,7's with different cams. 38 sounds like a lot, but I don't know if you're expecting this to run on pump gas, and of what octane. Or your altitude. I used to run a lot of advance in the ur-GTI - but I lived at 6000 feet. Makes a difference.

[bfrymire]

PO did the conversion, so, there are a lot of unknowns. I am unsure of what flywheel, or cams, or disty that are in the car. Suppose to be modified e cams, whatever that means. :'(. And the disty is also in question.

the whole reason I am doing this exercise, si that the hp is off. I dyno'd the car and it only made 110 at the wheels. Ackkk. Compression is 160 on all cylindrs. Fuel is right where it should be. Used a wideband o2. So, the only thing left is ignition and cams.

thanks again for the inputs.

-- brett

Which brings on another question... I have a 2.7l, with cis converted to megasquirt. The spec shows 5 atdc initial and 38 total.

Well, yes, that's another question, but it is not the essential question.
The essential question is: are you sure you've got a 914/6 flywheel?
'Cause 911 flywheels don't have timing marks on the flywheel...
If you're using a 911 flywheel, it's smart to put the timing marks there before mating the transmission, using a known TDC and a degree wheel.

I can't really answer the rest, but I expect it will depend on whether or not you are using the stock distributor and have appropriate vacuum sources for whatever it needs. And there's a few different kinds of 2,7's with different cams. 38 sounds like a lot, but I don't know if you're expecting this to run on pump gas, and of what octane. Or your altitude. I used to run a lot of advance in the ur-GTI - but I lived at 6000 feet. Makes a difference.