Author Topic: $&#^$(@$%#@%* (Read 6908 times)

arfalberg · « **on:** July 30, 2006, 09:23:05 pm »

Okay, first time installing a IP. I was trying to get everything lined up and forgot to remove the cam lock. it chiped a small piece off the cam. i don't think it would structurally crap out but it wil be a wee bit off balance.

the piece is about .25 inches long and .15 or so inches tall.

i know i should change it but is it absolutely nessassary to do it now?

also i cant seem to get the motor in the correct allignment withthe timming belt. i get it all lined up but after rotating the engine around and the cam back to TDC the timing mark on the flywheel is about .25 inches off. if i slip the cam one tooth it is about 1 inch off going the other way.

so in summary how bad is the cam? (i will post pics on monday for a visual)

and how exact are the timing marks? .25 inches close enough?

i got really pissed because i had that belt off about 15 times tring to get all three in perfect position, and every time there is always one of the three a bit (or more) off.

745 turbogreasel · « **Reply #1 on:** July 31, 2006, 05:10:38 am »

THe gear is not supposed to be locked to the cam when you time it.
loosen the pulley. set engine to TDC, lock IP, lock cam, then tighten the cam pulley.
Tension belt and rotate the engine 2 revs forward by hand to be sure nothing hits.
recheck timing.

I have run em with a chip off the end, something else will break before it is a problem.

arfalberg · « **Reply #2 on:** July 31, 2006, 07:55:33 am »

i know you arn't supposed to leave it in. i did it accedently. i had the belt on and was going to do the two rev thing to check timing.

anyway i thought you coul run with the chip out just wanted to see who else has done it and if any problems happened. hopefully in a 6 months to a year i will be getting a performance cam and do away with this one.

okay any input on the timing belt being off a bit?

arfalberg · « **Reply #3 on:** July 31, 2006, 12:51:21 pm »

Here is the image of the cam shaft damage.

http://www.geocities.com/falbergaj/P7310068.JPG

Master ACiD · « **Reply #4 on:** July 31, 2006, 12:58:11 pm »

dont worry about th cam being off balance. theres no such thing as a balanced cam because they have cam lobes.

745 turbogreasel · « **Reply #5 on:** July 31, 2006, 01:04:16 pm »

Quote from: arfalberg

okay any input on the timing belt being off a bit?

How can it be off when it spins freely on the end of the cam?

Doug · « **Reply #6 on:** July 31, 2006, 01:38:24 pm »

It seems that this fellow does not understand what you are saying. The cam sprocket rests on the cam shaft on a taper. Back off the nut, tap the sprocket lightly to free the sprocket. Then set the pump in the correct position locking it with an 11 mm socket or something similar, the camshaft with the notch parallel to the head above the head casting surface, the crankshaft mark for #1 TDC in the flywheel port and slip on the belt. If nothing moves while doing this the timing will be correct. I agree with your statement that nothing can change.

arfalberg · « **Reply #7 on:** July 31, 2006, 03:45:32 pm »

:oops: No woodruff key on the cam??? :oops:

i am a bit embarrassed for the Dumb a$$ question

It never occured to me to check that!

%$#^!!! :x &#^!!! :twisted: $%)&!!! :evil: %$^&!!! :!: ^%$#!!! (you get the point)

Thanks, it is much easier now.

Now that pic is working what do you guys think of the damage to my cam shaft? Will it last say 5000 miles?? i will probably not be nice to it, so expect 5000 RPM at least some of the time. not to mention i am about to do all if not most of the things in the performance section. got the arp studs in today, and my intercooler and gauges in last friday, got some others on order like the turbo rebuild kit from Jake.

And i know the lobes are balanced to begin with, but once you take off a chunk, it all gets thrown out of whack.

MacGyver · « **Reply #8 on:** July 31, 2006, 05:06:05 pm »

As already mentioned above, do NOT worry about the cam damage.
Remember it turns 1/2 engine speed.
It's not a seal or bearing surface, there are LOTS running that look like that or worse.

If you're really concerned, take a chisel & knock an equal amout out directly opposite...I'M KIDDING :shock:

Put it back together, run it, be happy. Won't be a problem

Doug · « **Reply #9 on:** July 31, 2006, 05:07:22 pm »

Don't feel bad about your assumption that there should be a key to the sprocket. Many years ago when I first did a timing belt change I made the same mistake as you, struggling until a VW mechanic shared his knowledge. Your camshaft will last longer than the car and the engine provided that you don't starve it for oil. Remember that it turns at half the speed of the crankshaft.

Master ACiD · « **Reply #10 on:** July 31, 2006, 08:50:10 pm »

not only does it turn at half speed but the cam its self is a very narrow piece of metal. there isnt enough mass on the outward parts to throw it off balance. its pretty much impossible to have a cam significantly off balance no matter what you do to it.

arfalberg · « **Reply #11 on:** August 01, 2006, 09:58:03 am »

First, i got the timing done in record time last night. It is amazing how much the lack of a key can help in the whole timing delima i was going through. so thanks again. not running quite yet but hopefully tonight.

and you have convenced me to not replace the cam quite yet. but when i do it will have to be a performance cam.

thanks all

commuter boy · « **Reply #12 on:** August 01, 2006, 05:36:28 pm »

Leave the cam, it won't hurt anything the way it is.

A good lesson though on checking everything carefully and turning things gently by hand before startup. My personal sin is either leaving the pump locating pin in or not tightening down all the pump bolts before startup.

arfalberg · « **Reply #13 on:** August 02, 2006, 12:49:12 am »

it is back together but is not starting. Not doing anything, just crank and crank and crank. never even tried starting.

any common issues that would cause this?? the cam/ip timing is good but i plan on recheckeing just to make sure. i heard of there being 2 marks on the flywheel, would that be on the 85 as well?? how would i know if the ip is 180 off? and the other thing i was wondering is do i need to purge the air out?

addautomotive · « **Reply #14 on:** August 02, 2006, 08:27:03 am »

Are you getting 12V to the IP fuel solenoid?

Author Topic: $&#^$(@$%#@%* (Read 6908 times)

arfalberg

745 turbogreasel

arfalberg

arfalberg

745 turbogreasel

Doug

arfalberg

Doug

arfalberg

arfalberg

addautomotive