Valve guides

[Ph1 Tom]

Sending the head off on Monday for a port and polish and some new valve stem seals. The engine runs very well and is on 87k so is it worth doing the guides for an extra £200 (I'm not even sure they need doing) or just get the seals done?

 

[Dan@SJM]

Yes.

 

[Ph1 Tom]

Are they prone to wear?

 

[Dan@SJM]

They will have worn yes.

 

[Dan519]

Last 2 heads I've taken in to have guides, the machinist has laughed his head off at how bad they were. One of them needed all new valves too as the stems were worn

 

[Ph1 Tom]

Well its getting a port and polish, Supertech valves, new guides, new seals and Catcams valve springs

 

[franx]

why the supertech $$$ ones may i ask ? Are you running high rpm's?

 

[Fred@BTM]

^they're not as expensive as you think cheaper/similar to most aftermarket suppliers

 

[Mr R.]

Well its getting a port and polish, Supertech valves, new guides, new seals and Catcams valve springs

Good lad.....

Just get it all done for piece of mind mate, last thing you want is something else to go wrong.

 

[Ph1 Tom]

Then it'll be ready for ITBs and plenty of track abuse

 

[p@blo]

Where you getting them installed Tom and which make of guides you gone for?

 

[franx]

^they're not as expensive as you think cheaper/similar to most aftermarket suppliers

Ok.. I could'nt get a better deal than 23 euros a piece over here, exhaust ones came around 26. The op is right when looking at his ITB plans and track + all I was interested as well in these..

 

[mitch1503]

You's of been an idiot not 2 of tbh seen as the heads off, if your going to that extent of valve springs etc you may aswel go for a wilder cam than the Piper's aswel surely with you going ITB's

 

[Ph1 Tom]

Works out at £21 per valve.

I'm contemplating some bigger cams, maybe 422 or 423. Does anyone know if they clear the pistons or do they need cutouts?

 

[Fred@BTM]

where from? £18 each from me (i think, will check on monday)

 

[Ph1 Tom]

PEC. I haven't ordered yet though. I can give you a ring on Monday. Do you do the valve springs too?

 

[Fred@BTM]

catcams? no real need unless its a batshit crazy engine

 

[Ph1 Tom]

Yeah. I was just looking at replacing the springs whilst they were out, might avoid a dropped valve in the long run. I've had a couple of springs go in the past

 

[Fred@BTM]

on an F4R? i'm yet to see a failed valve spring!

 

[Ph1 Tom]

No on other engines. If its pointless I'll leave them.

 

[Dan519]

Don't need springs till you go up to 422s. Utterly pointless on pipers

 

[Keith185]

Sending the head off on Monday for a port and polish and some new valve stem seals.

Who are you using for the porting and polishing work Tom?

 

[Chip-mk1]

Worth doing guides if there is any wear, but not worth doing in terms of bettering the material as its some sort of colsibro type material to begin with anyway, ie decent quality.

 

[Ph1 Tom]

Who are you using for the porting and polishing work Tom?

Andrew at ALD. There's a thread in the group buy section

 

[Mr R.]

Tom have you got the Renault locking tools for the cams mate?

 

[Ph1 Tom]

I'm trying to get some, the garage said they might be able to get them from the local Renault garage as they've done that a few times before. The lad working on it is an ex Renault Sport guy, he's worked on the Williams, 1*2 and in Sweden on the V6s.

 

[Mr R.]

Well if you get stuck ill send you mine, all i ask is that you pay the postage.

I have all 3 bits, i bought it from Renault when i did my belts.

Offers there mate.

 

[Ph1 Tom]

Cheers dude if I have no luck I'll give you a PM in a couple of weeks when its going back together.

 

[Mr R.]

No worry's.