while I have the engine out I should....

[tt930]

I have removed the engine from a 2008 3speed. It has around 190k miles. I got it from a friend who was the 2nd owner. It had what appeared to be a bad head gasket. It has great service records with many oil changes and other services. It does have a K&N intake and filter and a Cobb access port with what I think was the stage 1 tune installed (I wonder if this caused the head gasket problem???). I did a leak down test and cylinders #1 & #2 were fine, but #3 leaked a lot of air out the spark plug hole in #4. So I took the engine out and it did have a bad head gasket. The head is at a machine shop getting refreshed. So while I have the engine out I plan to update/replace the following:

• Timing chains, the VVT and tensioner
• Clutch plate, throw out bearing and pilot bushing
• I removed the engine balance shaft and installed the Corksport oil pan baffle.
• ARP head studs
• New PVC valve
• New power steering hoses, they were badly rusted and has started to leak
• Corksport rear motor mount
• Timing cover crank seal
• Cam cover gasket
• rear main seal

Should I replace or add the following items while I have the engine out:

• Water pump, thermostat?
• O2 sensors
• Pressure plate (do they go bad? my other MS3 with 216K on the original clutch is doing great)
• Fuel pump high pressure internals
• Oil cooler, Oil temp and pressure gauges? (I plan to do a few track days with the car down the road)
• Anything else??

Thanks

Oh can anybody tell me the part number for this part? took it off the engine weeks ago and forgot where it came from. Upon inspection recently I noticed a small rust hole forming. I can't find it in the a Madza parts catalog. I tried looking under coolant parts but did not see anything that looked like it.

 

[Easter Bunny]

You should swap the downpipe

 

[tt930]

You should swap the downpipelooking online I did notice that changing the down pipe helps performance but here in NY we have annual inspections that check for codes and if you have erased code before arriving. they will fail the car. Are there down pipes that don't cause codes?

In NY we have annual inspects and they will fail you if you any codes or have erase them before the inspection. most down pipes I saw seem to be catless, the others with cats did not seem to have ports for both OS sensors. are there some that will not cause a code?

 

[Easter Bunny]

you would need a catted DP and could always have the appropriate bungs welded on

 

[Benny71]

In NY we have annual inspects and they will fail you if you any codes or have erase them before the inspection. most down pipes I saw seem to be catless, the others with cats did not seem to have ports for both OS sensors. are there some that will not cause a code?

The CPE QKspl catted downpipe has both O2 sensor bungs, upper & lower. I've been running this in Massachusetts and no issues when hooked up to the scanner for inspection. Just my 2 cents.