20 replies to this topic

[gsr-mat]

I am trying to remove valve springs whilst I have the head off, however generic compressors dont look like they will work with the tight fit of the valve springs in the 4g93t.

Have seen a few old threads with people using custom tools they have built, but all the links are dead. Any help would be greatly appreciated

 

 

[bj]

socket, hammer, rag and PPE!

[gsr-mat]

Dare I ask what PPE is?

[bj]

Personal protective equipment

lol

[gsr-mat]

ah

 

With this method how the hell u get the clips back on..?

 

Thanks for the advice too

[bj]

Edited by bj, 13 October 2018 - 07:39 AM.

[gsr-mat]

Not sure if you posted something as all I see is a blank post :|

[bj]

looks like it didn't work, was only a video of some guy using the socket and hammer technique.

ps. you use a normal spring compressor tool to get them back on

[Cranked]

Fab something up. I had one but I have not seen it in years. EBay maybe?

[jack be nimble]

I use a cheap f-clamp from Bunnings. On the fixed end I put a bit of tube with a window cut in it. It's better if it is welded to the fixed end, but not absolutely necessary. Window onto the spring top, threaded handle end on the valve head, screw in till you can retrieve the collets.
Works for bikes, 93s, 63s lots of things. Just make sure the f clamp is long enough to reach the valve face.
The cutout is maybe a 1/4 of the tube diameter. The tube diameter is best if it's as close to the valve retainer diameter. I think mine might be a bit of old wardrobe tube. Bit thicker than shower rod or curtain rod.

[gsr-mat]

Thanks, will have to have a crack at it this week. Cheers.

 

 

Follow up question, should you know the answer...

 

The crank angle sensor which uses cam position on the intake cam,,,is there any alignment needed for that as I see the unit is adjustable to the head also?

[jack be nimble]

You need to set it with a timing light after earthing the timing connector on the firewall. I also ensure the timing mark is correct on the balancer as they are known to walk on the rubber damper

[gsr-mat]

eh thats a bit hectic...think i will just do the valve stem seals on the exhaust side this time...problem for another day  

[jack be nimble]

Pour some kerosene in the ports while the head is on its side to check the valve seal. Relap to fix valve seal if it leaks. Decarbon ports and chambers and piston tops while you there.
Leave a small edge of carbon around edge of piston.

[gsr-mat]

Thanks, had limited time this week. Will take a look.

 

In regards to lifters, lots of opinions in various posts I have seen...

 

I have at least gen2 lifters (big hole) and these were done fairly recently. After removing them they are solid, assume this is not safe to just reinstall?

 

If not, whats ur recommendation for bleeding/cleaning and operation of them before install?

 

Cheers

[jack be nimble]

There is a jaffro you tube video on it. I'd probably just follow that

[SIVART]

I use this kit, I got mine from China direct but its got everything you need even to do the valve stem seals on the car if required

 

https://www.ebay.co....Ao5a:rk:34:pf:0

[gsr-mat]

Thanks. For the record I actually went with:

 

https://www.ebay.com...872.m2749.l2649

 

worked a treat  

 

FYI - Head apart, cleaned up, valves just need a clean and new lifters to arrive before re-assembly

[jack be nimble]

Both kits look pretty good.

[evo-gsr]

I have a set of genuine viton valve stem seals if you need them.