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Author Topic: 1.6D vs. 1.6TD crankshafts  (Read 1991 times)

Reply #15January 07, 2023, 10:45:08 am

oblique

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Re: 1.6D vs. 1.6TD crankshafts
« Reply #15 on: January 07, 2023, 10:45:08 am »
Ok so camshafts themselves are the same but, the caps are matched to the head? Are they marked? If I misplace them how do I know where they go back?

Is it the same for rod and crankshaft caps?

Back to the intermediate shaft: I could not remove it even with the vac pump out. The shaft itself rotates freely but when prying thru vac pump hole it would bind..not just hit a blockage but bind on something and stick...I can only assume it must be the crankshaft if it's an interference fit in this particular position.

Valve seats: I did not see a lip for punching the seats out like you would a head race bearing on a motorcycle. I am assuming valve seats are non-reusable because they must be destroyed to remove them, correct?

https://www.youtube.com/watch?v=eZnWi6xcKqk

I did knock one of the precups out...yep, they're in there.

Valve guides are out too but I made a mess of some of them, brass is soft. I guess the head should be baked first.
« Last Edit: January 07, 2023, 05:22:30 pm by ORCoaster »

Reply #16January 07, 2023, 07:59:36 pm

fatmobile

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Re: 1.6D vs. 1.6TD crankshafts
« Reply #16 on: January 07, 2023, 07:59:36 pm »
NA camshaft equals NA camshaft. I think the hydraulic cams are different.
Cam caps are marked with numbers stamped in them
Rod caps are always kept with the same rod.

Might need a slide hammer for the I-shaft. I've never heard of one not coming out.
It's not the crank interfering.

Valve seats don't usually get removed,.. they just get ground to match the valves.
I've heard putting a couple tig welds on them will cause them to shrink,.. if they do need removed.
If too much is removed the valves sit higher and on a mechanical head will mess with the clearance on the valve adjustment shims.
 They only go down so thin.
That's one reason why new valves are recommended to help lower the valve.

I've heard that drilling the valve guides will make them thinner, heat them up a little and make them easier to remove.
Also makes them harder to get a grip on.

Tornado red, '91 Golf 4 door,
with a re-ringed, '84 quantum, turbo diesel, MD block

Reply #17January 08, 2023, 10:02:13 am

oblique

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Re: 1.6D vs. 1.6TD crankshafts
« Reply #17 on: January 08, 2023, 10:02:13 am »
So I am working only on hydraulic NA heads/motor. The junk head Im salvaging parts from is from a 90NA Jetta and the motor Im rebuilding is from a 91NA jetta coupe, although i may turbo it.

So are hydro NA camshafts different from Hydro turbo ones?

Reply #18January 08, 2023, 08:25:19 pm

fatmobile

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Re: 1.6D vs. 1.6TD crankshafts
« Reply #18 on: January 08, 2023, 08:25:19 pm »
I don't think they are different.
 Since they have the same stroke,.. rods and crank.
Power curve would be in the same place.
Tornado red, '91 Golf 4 door,
with a re-ringed, '84 quantum, turbo diesel, MD block