Printable Version of Topic

Click here to view this topic in its original format

914World.com _ 914World Garage _ adjusting valves

Posted by: DrifterJay Oct 22 2004, 11:08 PM

ok wtf???? all the valves are opening and closing but they wont open enough to even get the fucking feeler gauge in there....I am running dual valve springs with 911 adjusters and I have the little caps on the valves to keep them from getting damaged by the adjusters...should I just run the regular valve train? they seem too long....

Posted by: DrifterJay Oct 22 2004, 11:09 PM

and yes all the pushrods are seated...

Posted by: DrifterJay Oct 22 2004, 11:10 PM

I was planning on adjusting them all to .004 like sirandy....

Posted by: MattR Oct 22 2004, 11:35 PM

Did you clearence the rockers for the 911 valve adjusters?

Posted by: DrifterJay Oct 22 2004, 11:42 PM

they came with the engine....which had been running before with them...but without the caps to protect the valves....

Posted by: DrifterJay Oct 23 2004, 12:05 AM

I am going to throw away my engine....going in the garbage....gonna buy 2.0 turbo diesel...

Posted by: Mueller Oct 23 2004, 12:29 AM

sounds like the PO of your motor didn't do the valve train correct....are the valves stainless? I'm guessing that is why you have the lash caps

there have been a few threads here on this forum explaining what you need to do and how to modify the adjusters (grinding) and check to ensure the pushrods are the correct length

easiest would be swap back to stock /4 parts, but you might as well spend the time to do it correct(?) using the 911 adjusters

Posted by: DrifterJay Oct 23 2004, 12:30 AM

I go to Iraq in 8 weeks...I will use the stock rockers for now...

Posted by: Brett W Oct 23 2004, 06:47 AM

Hey just pull the lash caps out. The 911 adjusters don't put as much wear on top of the valves as the stock ones do.

Posted by: Joe Sharp Old Oct 23 2004, 07:04 AM

Jay: Where is your trash can? It would be easer for me if you put it in mine. Who did the valve train geometry? If I don't see you before you leave good luck and come back and see us.
Joe

Posted by: Jake Raby Oct 23 2004, 08:16 AM

Yep, toss the valve caps.......

The 911 adjuster won't wear the stem...

Lets hope that you set the rocker geometry????? Did you???

If not, you have a disaster waiting to happen, it's silent death just lurking!

Posted by: Cap'n Krusty Oct 23 2004, 09:59 AM

I'm awake, I'm awake ....................... Lose the lash caps, which were ORIGINALLY used for valve adjustment on Alfas, 906 motors, and others. Their use as valve stem protectors was developed when people started using soft valves and they were a convenient bandaid. To be used properly, the valve stem needs to be tipped the exact amount of the cap's thickness, something nobody seems to think of these days. Too many magazine writers, not enough thinking .................
911 adjusters do the same thing, allowing the adjuster to float and absorb the abuse from the pounding between the rocker and the valve. BTW, they weigh more than stock adjusters, thereby increasing valve train mass, a bad thing. Porsche went to the lash caps in the 906 to decrease the mass of the valve train, not to protect the ends of the valves, which don't wear in 911s. The 4 cam 4 cylinder motors used them, too, but in this case they were in direct contact with the cams. HTH, The Cap'n