The Cal-look Lounge
Welcome, Guest. Please login or register.
Did you miss your activation email?
March 29, 2024, 08:23:24 am

Login with username, password and session length
Thank you for your support!
Search:     Advanced search
350646 Posts in 28563 Topics by 6811 Members
Latest Member: Bren
* Home This Year's European Top 20 lists All Time European Top 20 lists Search Login Register
+  The Cal-look Lounge
|-+  Cal-look/High Performance
| |-+  Technical stuff
| | |-+  flywheel seal leakage
« previous next »
Pages: [1] Print
Author Topic: flywheel seal leakage  (Read 4985 times)
Glauco
Sr. Member
****
Posts: 497



« on: July 22, 2018, 11:42:08 am »

Ok, what am I doing wrong here:

I put the first 200miles on the karmann and every time I stop somewhere there was a puddle of oil under the car.
I took the engine out this morning - because I'm leaving on holliday tomorrow and this couldn't wait 2 weeks, altho my girlfriend seems to think otherwise  Cheesy -

the leakage is coming from the flywheel seal, but here's the strange part: the seal is brand new and still looks brand new. the (lightened) flywheel is also brand new and shows no signs of wear what so ever...
what I did discover is when I put the seal over the flywheel (without puthing it in the engine) there is little or no resistance between the flywheel and the seal. is this normal?
it's the seal with single lip and the flywheel is a lightened one.

thank you

glauco
Logged
Garrick Clark
Sr. Member
****
Posts: 499


« Reply #1 on: July 22, 2018, 16:56:28 pm »

Did you fit a new O ring to the inside edge of the fly wheel.
Logged

Air cooled Engine builder
Glauco
Sr. Member
****
Posts: 497



« Reply #2 on: July 22, 2018, 17:09:36 pm »

Did you fit a new O ring to the inside edge of the fly wheel.


I did, but I haven't checked if it's still intact...
Thank you for the idea!

Glauco
Logged
Garrick Clark
Sr. Member
****
Posts: 499


« Reply #3 on: July 22, 2018, 19:18:51 pm »

I've fitted  seals to the flywheel hub which just slipped on with not much resistance and have in the past had to remove the inner seal spring and the wire and shorten them a bit to get them to have a tighter fit over the wheel hub. you would also benefit from bench running the engine till its fixed.
Logged

Air cooled Engine builder
Glauco
Sr. Member
****
Posts: 497



« Reply #4 on: July 22, 2018, 19:46:41 pm »

I've fitted  seals to the flywheel hub which just slipped on with not much resistance and have in the past had to remove the inner seal spring and the wire and shorten them a bit to get them to have a tighter fit over the wheel hub. you would also benefit from bench running the engine till its fixed.

That's something I have heard of as well.  I'm going to give that a try as well!
Logged
UltraOrange67-2443
Hero Member
*****
Posts: 1034



« Reply #5 on: July 23, 2018, 15:09:08 pm »

Did you oil the seal against the Flywheel when installing?

Easy to burn new seals without it
Logged

1967 1200 2920cc EFI
StewRat
Full Member
***
Posts: 152


« Reply #6 on: July 23, 2018, 16:50:43 pm »

Are you sure it is the flywheel seal?

This thread documents me going through several seals and insertion techniques before discovering it was an oil gallery plug that was leaking.

http://cal-look.no/lounge/index.php/topic,27084.30.html

best of luck whatever it is.

stewart
Logged

“There are three kinds of men. The one that learns by reading. The few who learn by observation.
The rest of them have to pee on the electric fence for themselves.” – Will Rogers

The Stew Rat build thread http://cal-look.no/lounge/index.php/topic,25365.0.html
Martin S.
Hero Member
*****
Posts: 990



« Reply #7 on: July 23, 2018, 17:16:10 pm »

Single lip seal eh? I don't see those available. cip shows 3 different seals and they're all double lip.
I took some pics of the original VW black seal from an previously untouched 1500SP engine which still didn't leak but I replaced it anyway when doing a top end rebuild.
Logged

Cal Look white 68 Bug with AJ Sims EFI Turbo 2332. 194hp 240tq @ 5500 rpm 3psi boost.
bedjo78
Full Member
***
Posts: 249


« Reply #8 on: July 24, 2018, 05:28:29 am »

After torque it up I always apply case sealant surrounding flywheel bolt. Just in case flywheel seal failed
Logged
Glauco
Sr. Member
****
Posts: 497



« Reply #9 on: July 24, 2018, 09:30:04 am »

Did you oil the seal against the Flywheel when installing?

Easy to burn new seals without it

I did, and I'm pretty sure the seal isn't burnt,  still looks brand new.
Logged
Glauco
Sr. Member
****
Posts: 497



« Reply #10 on: July 24, 2018, 09:31:22 am »

Single lip seal eh? I don't see those available. cip shows 3 different seals and they're all double lip.
I took some pics of the original VW black seal from an previously untouched 1500SP engine which still didn't leak but I replaced it anyway when doing a top end rebuild.


I explained it wrong, with double lip I wanted to say with the extra dust seal.
Logged
Martin S.
Hero Member
*****
Posts: 990



« Reply #11 on: July 24, 2018, 15:07:02 pm »

Single lip seal eh? I don't see those available. cip shows 3 different seals and they're all double lip.
I took some pics of the original VW black seal from an previously untouched 1500SP engine which still didn't leak but I replaced it anyway when doing a top end rebuild.


I explained it wrong, with double lip I wanted to say with the extra dust seal.

Sure. But look at that original stock black 50 year old seal in my pic. It's all dried up, worn with no lip left.
I was driving the car like that for a few years. It did NOT leak, believe it or not!
Logged

Cal Look white 68 Bug with AJ Sims EFI Turbo 2332. 194hp 240tq @ 5500 rpm 3psi boost.
RMS Boxer Service
Sr. Member
****
Posts: 308


WWW
« Reply #12 on: July 26, 2018, 17:22:39 pm »

If the oil return hole behind the oilseal/mainbearing is blocked then oil will be pressed out at the seal.

/Rolf
Logged
Glauco
Sr. Member
****
Posts: 497



« Reply #13 on: August 20, 2018, 13:39:59 pm »

for those who were wondering, it turned out to be the primairy shaft seal that whas leaking...
replaced both the seals (primary shaft and flywheel seal) and so far no leakages any more...

glauco
Logged
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!