Pics Of Valve Stem And Piston Head Needed

[Dannopower]

Hi Guys,

Im about to undertake a valve spring install with my old and wise Mercedes mechanic mate on the trusty ute, but he insists on me getting him a few pics before we get into it.

First, Does anyone have a pic of the valve stem and the spring retainers from an XR6T?

Second, does anyone have a pic of the top of a standard XR6 turbo piston head?

We are going to try and change the springs without removing the cams. Anyone done this before?

Old Alfred has at least 20 different spring removal tools and little jigs he has made up over the years, im sure everything will work out ok.

Wish me luck!

[Adam]

I've done it. Do these help?

[DAVO61]

WILL YOU HAVE IT DONE BEFORE THE DYNO DAY ON SATURDAY ,TO SEE HOW YOU GAIN ? WHAT TYPE OF SPRINGS YOU INSTALLING?

[Dannopower]

Im trying to get them sorted before saturday champ. Will be interesting to see the result, anyway.

I have had the Nizpro springs kicking around for a while now, just havent had the time or courage to put them in!

[JimmyXR6T04]

you gonna get it re-tuned Danno??? let me know how you go mate.

[dingah2]

No need for a re-tune.

Theoretically I gained 70RWKW at 5100RPM but that's a lot of ho hum really unless you spend your time at or above 5100RPM.

That was a result of the springs starting to find the going too tough at high RPM and higher boost - 12psi.

Dingah

[JimmyXR6T04]

  dingah2 said:

No need for a re-tune.

Theoretically I gained 70RWKW at 5100RPM but that's a lot of ho hum really unless you spend your time at or above 5100RPM.

That was a result of the springs starting to find the going too tough at high RPM and higher boost  - 12psi. 

Dingah

←

that's one of the reasons I keep my car under 5000rpm, the standard valve springs.

I've been told by that the car will behave differently at the higher rpm, and a re-tune would be recommended. Surely he'd benefit from a re-tune?

[Dannopower]

Well, pulled the rocker cover off, had a good look in there, and unfortunately all the spring tools that we had were designed to pivot off the camshafts.

As anyone that's had a look in there knows, there is simply not enough room to get the rear 2 cylinders out with the cams still in.

I need someone that's done these before to answer a few questions,

1) does the cam chain tensioner want to pop out once the cam gears are removed from the front of the camshafts? It looks like it will fall out into the front of the chain covers. Are the rachet controlled or hydraulical?

2) I read Eugenes guide, but how does he expect to turn the engine over if there is nothing but clumps of rag holding the cam chain and gears in position from the front???

We put it all back together for further evaluation!

[Muzza]

  Dannopower said:

Well, pulled the rocker cover off, had a good look in there, and unfortunately all the spring tools that we had were designed to pivot off the camshafts.

As anyone that's had a look in there knows, there is simply not enough room to get the rear 2 cylinders out with the cams still in.

I need someone that's done these before to answer a few questions,

1) does the cam chain tensioner want to pop out once the cam gears are removed from the front of the camshafts? It looks like it will fall out into the front of the chain covers. Are the rachet controlled or hydraulical?

2) I read Eugenes guide, but how does he expect to turn the engine over if there is nothing but clumps of rag holding the cam chain and gears in position from the front???

We put it all back together for further evaluation!

←

Hi, When Eugene & myself done it one held the timing gears as the other removed the rag & turned it over to top dead then placed rag back in so it didn't fall off the bottom of crank gear.

The rachet Adjuster will pop out so on completion hold some weight on the chain & with a long screw driver there is a tag you pop up on the adjuster then adjuster will go in.

Hope this helps, good luck.

Muzza.

Edited 26/07/06 07:41 AM by Muzza

[Dannopower]

  Muzza said:

Hi, When Eugene & myself done it one held the timing gears as the other removed the rag & turned it over to top dead then placed rag back in so it didn't fall off the bottom of crank gear.

The rachet Adjuster will pop out so on completion hold some weight on the chain & with a long screw driver there is a tag you pop up on the adjuster then adjuster will go in.

Hope this helps, good luck.

Muzza.

←

Thanks Muzza.

I tried phoning the local Ford dealer here and they said they would not do it. Any spring/roller rocker issues they have, he said they get a complete new head from Ford! I asked if they would do this just for me and he said they dont even have the Ford tools to do it, so no.

There is one guy in town here that has the Atomic tool, but im not sure if I trust his work. its a shame too, but At least if I have a crack myself, I know everything is done as correctly as possible and nothing is left to chance.

Im going to give 1 more place a call in the morning, and if he quotes me more than $500 im getting the Atomic tool.

Oh, and by the way, the standard springs in my car have what looks like an orange stripe on them? anyone know what this means?