Want to refresh the heads, what to replace??
02-05-2012, 05:53 AM
#1
Racer
Thread Starter
Want to refresh the heads, what to replace??
I have low compression on two of my cylinders, suspected valve not seating correctly, the car still runs fine but in the near future the heads will have to come off.
If I remove the heads and have them sent to a machine shop to refresh, what parts to order, I assume I will need new valves for the two clyinders, what else? head gaskets? if so OEM or aftermarket?
is is worth replacing all valves with stainless or just oem for the two cylinders?
This head and valve stuff is all new me so all suggestions welcome.
If I remove the heads and have them sent to a machine shop to refresh, what parts to order, I assume I will need new valves for the two clyinders, what else? head gaskets? if so OEM or aftermarket?
is is worth replacing all valves with stainless or just oem for the two cylinders?
This head and valve stuff is all new me so all suggestions welcome.
02-05-2012, 06:09 AM
#2
Rennlist Member
You really won't know for sure until the heads are off, wear limits measured, disassembled and checked.
Have you done a leakdown test or pressure tested cylinders to confirm what's wrong?
You should also be including front end and intake refresh WYAIT, and sump gasket, etc, etc, etc.
Have you done a leakdown test or pressure tested cylinders to confirm what's wrong?
You should also be including front end and intake refresh WYAIT, and sump gasket, etc, etc, etc.
02-05-2012, 06:29 AM
#3
Racer
Thread Starter
Intake, cam covers and front end already done. A leakdown test will be done.
Just trying to get a sense of what to order as getting parts here takes a long time.
Just trying to get a sense of what to order as getting parts here takes a long time.
02-05-2012, 07:27 PM
#5
Archive Gatekeeper
Rennlist Member
Rennlist Member
This is the minimum wear item list I would consider for head refreshing.
Code:
HEADS: 2 928.105.530.01 Cam gears 2 928.105.459.00 cam gear hubs 2 999 113 282 40 cam front seals 2 IWIS Racing cam chains from Roger 16 944.104.327.51 valve guides 32 928.104.601.07 valve stem seal - need 32 64 928.105.221.10 valve collets- need 64 PET 5 928.105.262.00 cam galley plugs -3 for passenger, 2 for driver side 1 928 104 368 02 head gasket 1 928 104 367 02 head gasket 32 928.105.312.02 Polish lifters or replace with VW lightweights 2 928.104.119.01 drainback valve spring guide 2 928.104.121.00 drainback valve seat 2 928.104.129.00 drainback valve compression spring 2 999.701.654.40 drainback valve o-ring 2 N 025 669 2 drainback valve ball 8 911.101.182.00 oil galley freeze plugs 8 N 011 918 1 oil galley plug cover 8 928.104.443.08 spark plug hole gaskets need 8 2 928 106 167 01 water outlet gaskets 2 928 104 447 09 valve cover gaskets 26 928 104 115 02 valve cover bolt thrust rings 12 900.123.144.30 (or N013 811 2?) cam cover bolt sealing rings 2 900 067 255 02 hex head bolts for Hall sensor 4 900.174.056.40 cam cover breather fittings- o-rings 2 944.105.949.00 chain tensioner repair pads 1 944 606 170 02 Hall Sensor
