Recent Posts

21

IDI Engine / Re: 1.6IDI Not Fully Rotating/Not Starting

« Last post by Mohatanous on March 26, 2024, 10:19:55 pm »

Brief update:

I have not had any further work done on the head due to my friend unfortunately having a stroke. At this time we don't know if he will be alright or not, so that just plain sucks.

In the mean time I've started cleaning the block out of buildup and replacing the heater core. One other thing I have to tackle is the bearing on the steering shaft inside the car. That seems like a fun task!

22

mTDI Mechanical TDI Conversions / Re: Thoughts on mTDI AHU head porting

« Last post by jhax on March 25, 2024, 12:09:17 pm »

Exhaust port on head gasket side before:


Exhaust port on head gasket side after:


Overall first porting on headgasket side:


Exhaust ports before and after on manifold side:


Other two:


One left:


Final product:


I ended up smoothing out the exhaust ports to keep airflow as laminar as I could. While keeping the intake ports dimpled in order to promote turbulence for more efficient AF mixture sooner.

23

IDI Engine / Re: 1.6IDI Not Fully Rotating/Not Starting

« Last post by fatmobile on March 25, 2024, 02:13:51 am »

My concern is if you surface it flat, the cam will rock when it's installed.
It will be pushing down very hard on the center journals as it runs.

24

IDI Engine / Re: 1.6IDI Not Fully Rotating/Not Starting

« Last post by ORCoaster on March 23, 2024, 01:48:43 pm »

I used the glass plate and very fine, like 400 grit paper with oil, and got my head to come into tolerance.  So I think as long as you are careful with the precups on a machine you would be OK.  True or Not True?   

25

IDI Engine / Re: Awakened from a long slumber....

« Last post by fatmobile on March 21, 2024, 08:47:58 pm »

 You test drove it and that fixed it?

26

IDI Engine / Re: 1.6IDI Not Fully Rotating/Not Starting

« Last post by fatmobile on March 21, 2024, 08:45:43 pm »

 Right, those cracks are normal.
 Surprised you only found them on 1 and 4.
Get a machinist that knows VWs.
 Don't let him surface it. Find out what "fix it" means.

27

IDI Engine / Re: Awakened from a long slumber....

« Last post by ORCoaster on March 21, 2024, 07:44:58 pm »

Leaf springs on the front?  I am sure you meant wobbly wheels on the back.  Otherwise, you are driving something that VW didn't make or driving in reverse.

28

IDI Engine / Re: 1.6IDI Not Fully Rotating/Not Starting

« Last post by RabbitJockey on March 21, 2024, 12:06:13 pm »

those cracks are usually normal.

I'd consider the condition of the engine as a factor on whether or not i'd do rings. they're cheap to do while you're in there though.

29

IDI Engine / Re: Awakened from a long slumber....

« Last post by westcoaster on March 20, 2024, 11:38:04 pm »

Yup, Death Wobble...

Imagine the front wheel on a shopping cart wobbling back and forth but instead on the front wheels of a vehicle.
Funny enough, in my search for the cure, I found new Ford Superduty trucks also seem to have this affliction....

I think I was able to "patch up" the death wobble by removing the front leaf spring bushings and rotating them 180* in the springs and frame.

The rubber had sagged where the bolt wasn't in the centre of the bushing any longer.
Tightened up the spring shackles and took it for a run. Seems to be "better" for the moment.

30

IDI Engine / Re: 1.6IDI Not Fully Rotating/Not Starting

« Last post by Mohatanous on March 20, 2024, 09:35:08 pm »

Update:

I haven't had a lot of time to work on my car lately, but my head guy found that there were two cracks in the head between the valves on cylinder's 1 and 4. I'm going to have the head fixed and then pressure tested to ensure that it will be usable, so by the time I get it back it will basically be a brand new head.

Should I do piston rings since I'm getting the head redone to this degree? If so, anywhere specific to get good rings? Thanks in advance!