Thread: pulling head and swapping valves
06-08-2012, 08:16 PM #1
pulling head and swapping valves
i looked in the search area but what are some pointers and tips to removing head and swapping valves on 04 rxp? might end up doing some porting while im in there to will see. need to get new bolts to or should i get the head studs?
06-08-2012, 08:19 PM #2
Head studs I say. I'm glad I got them since I've had to replace my head gasket since the rebuild. You gonna do the head work yourself? Otherwise send it to slow91 at east coast porting... He does a good job.
06-08-2012, 08:26 PM #3
New head gasket and head bolts ( is do studs) Also, new rocker bolts. Make sure the engine is at TDC when you remove rocker arms. Less stress on shaft and won't flex or bend excessively. Mark the cam to the head with a sharpie. Remove fuel rail and IM too. Unless you are running BIG boost, gains are minimal at best on porting and polishing on low boost applications. good luck. 14 ft lbs on rocker bolts and 85 ft lbs on head bolts. Some do 95 in high boost applications with studs...
06-08-2012, 08:39 PM #4
studs it is.
u guys just dropping the timing chain then then? and TDC on a cylinder 1 then mark cam off that and should be good when pull chain back on.
is there a tensoner on the timing chain or i just really dont wanna mess up the timing is all!!
im looking to try and port it my self just clean it up a lil bit see how bad it is once im in there.
06-08-2012, 08:47 PM #5
Tie a rope to the chain so you don't lose it by mistake.
06-08-2012, 08:51 PM #6
06-08-2012, 09:58 PM #7
If you have the motor down that far might want to consider a new timing chain.
I pulled one out of a 03 gtx 185 that was really sloppy with 97 hours.
06-08-2012, 10:08 PM #8
- Join Date
- May 2011
- West Texas
I keep something between the chain so it doesn't drop down.
If you take material from the exhaust ports, make sure it matches up with the manifold. Deburr the sand casting flaws while the mani is off too.
Most use a stock head gasket when rebuilding too.
06-09-2012, 12:14 AM #9
I've always just dropped the chain. It's very easy to retrieve with a magnet.
06-09-2012, 12:21 AM #10
ha ha ha
like me -- > lets throw any extra nuts, blots, and screws in the bottom of the ski hull so they are there when you need them.. lol
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