| View previous topic :: View next topic |
| Author |
Message |
bradelporsche
Joined: 29 Mar 2008
Posts: 51
Location: VA
|
|
| Back to top |
|
 |
RC
Joined: 25 Mar 2007
Posts: 2637
Location: Australia
|
 Posted: Sun Mar 30, 2008 3:24 pm Post subject: |
 |
|
Welcome to the 924 board.
This is the place for 924 owners as I notice you didnt get much response on the Pelican forum.
YES. I am sure that will fit alright. There are a few different ones for the 8V VW engines around. As 924RACR said, it isnt a bad price. However here is one from Techtonic Tuning that was $70 about a year ago.
Roger
Last edited by RC on Sun Mar 30, 2008 5:45 pm; edited 1 time in total |
|
| Back to top |
|
|
bradelporsche
Joined: 29 Mar 2008
Posts: 51
Location: VA
|
| Posted: Sun Mar 30, 2008 3:46 pm Post subject: |
|
|
Thanks for the tip, but they are sold out on the red cam gear  .
ive also got some question im installing some VW Flatop 87.97mm pistons and when i first bolted on the head the valves would hit them so i just grinded
the lobes about 4 - 4 1/2 mm, Will this open the valve enough as far as it wont underpower the engine? |
|
| Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
| Posted: Sun Mar 30, 2008 4:00 pm Post subject: |
|
|
Hey Rog, about that tensioner. . .
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
| Back to top |
|
|
Smoothie
Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)
|
| Posted: Sun Mar 30, 2008 4:04 pm Post subject: |
|
|
That's an old pic - it was corrected already.
_________________
"..it's made in Germany. You know the Germans always make good stuff."
'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox |
|
| Back to top |
|
|
RC
Joined: 25 Mar 2007
Posts: 2637
Location: Australia
|
| Posted: Sun Mar 30, 2008 4:06 pm Post subject: |
|
|
| bradelporsche wrote: |
ive also got some question im installing some VW Flatop 87.97mm pistons and when i first bolted on the head the valves would hit them so i just grinded
the lobes about 4 - 4 1/2 mm, |
 Tell us your joking, please!
Personally haven`t had any experience with VW pistons but others here have used forged VW #1 pistons, albeit with a 931 head that has recessed valves. Using the search button above and entering VW pistons will give you lots of information.
Milling a notch on the pistons is common practice for valve clearance. If you are actually serious about removing 4mm from the cam lobe I think you will have difficulty pulling toilet paper off the roll, if at all! And that will likely be the least of your problems. 
Roger |
|
| Back to top |
|
|
RC
Joined: 25 Mar 2007
Posts: 2637
Location: Australia
|
| Posted: Sun Mar 30, 2008 4:09 pm Post subject: |
|
|
| Rasta Monsta wrote: | Hey Rog, about that tensioner. . .
|
Its all cool Rasta. 
Smoothie right about that. 
Roger |
|
| Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
| Posted: Sun Mar 30, 2008 4:14 pm Post subject: |
|
|
I remember m8, just messin with ya!
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
| Back to top |
|
|
bradelporsche
Joined: 29 Mar 2008
Posts: 51
Location: VA
|
| Posted: Sun Mar 30, 2008 4:21 pm Post subject: |
|
|
| my bad i meant 3mm is that too much? |
|
| Back to top |
|
|
tuurbo
Joined: 08 Aug 2007
Posts: 1446
Location: East Windsor, New Jersey
|
| Posted: Sun Mar 30, 2008 4:52 pm Post subject: |
|
|
| Can you put that puppy on a turbo? |
|
| Back to top |
|
|
RC
Joined: 25 Mar 2007
Posts: 2637
Location: Australia
|
| Posted: Sun Mar 30, 2008 5:50 pm Post subject: |
|
|
| bradelporsche wrote: | | my bad i meant 3mm is that too much? |
At least 3mm IMO.
Tuurbo wrote:
| Quote: | | Can you put that puppy on a turbo? |
Sure!
Roger |
|
| Back to top |
|
|
Rich H
Joined: 10 Jun 2007
Posts: 2665
Location: Preston, Lancs, UK
|
| Posted: Sun Mar 30, 2008 6:38 pm Post subject: |
|
|
3mm is a quarter of max standard lift... also the cams have a very hard coating, have you replaced this? If not they will eat your follwers and wear round very very quickly.
I think you will find you have good medium range torque, but the top end will be seriously compromised and it will run out of power well before 6k.
Whe you say valves met the pistons, do you mean that the engine could not be turned over or that the valve and pistons could hit each other if the cam belt breaks? I would imagine its the latter which is just somethign you will have to live with on a sporty engine. Most modern engines are interferance as well as the 924 turbo and the 924S. Get another camshaft and live with it...
Rich
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec |
|
| Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
|
| Posted: Mon Mar 31, 2008 2:22 am Post subject: |
|
|
. . .where the wind goes whistlin' through your brain!
Is that what they call a "custom grind?"
_________________
Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
| Back to top |
|
|
bradelporsche
Joined: 29 Mar 2008
Posts: 51
Location: VA
|
| Posted: Mon Mar 31, 2008 2:25 am Post subject: |
|
|
| I meant the engine could not be turned over. I have installed some mahle 87.97 pistons which are not dished as the stock ones. wouldnt the higher compression compensate at higher rpms? |
|
| Back to top |
|
|
Rich H
Joined: 10 Jun 2007
Posts: 2665
Location: Preston, Lancs, UK
|
| Posted: Mon Mar 31, 2008 4:18 am Post subject: |
|
|
As I said, I suspect at low revs they would but your 9mm lift would become the choke point of your design.
This is all speculation though.
Did you resurface the cams?
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
