Boroscoping before finishing????

[oricale]

Hello All as you know I have been working on the Z for a while and I have finally recieved my new Injectors from FIC,..(Jerry I need to order another seal kit!)..Anyway I had a high RPM knock at startup that everyone on here is sure its a dual mass flywheel issue ect due to sureley bad injectors!!!,...Well..I am wondering if I can boroscope the psitons through the sparkplug holes to verify that there is not a head issue(valves slapping the pistons).....

AND....if it is in fact a head issue can I change the head in the car???

Also All my WAZOO buddies...I almost have everything to get this thing done...let me know if we can set up a time or day?????

[LGAFF]

Retiming the cams, etc would be a PITA....a motor can be pulled in about 4 hours, why not pulled it and address it and any other items....

Just a note, not sure how bad the sound is but the LT-5 has a known piston slap issue that was determined to not impact longevity of the engine or performance.....

If the pistons are hitting pistons, why not do a leakdown or compression test to see if there is an issue?

[oricale]

Here is the earlier thread....http://www.zr1.net/forum/showthread.php?t=15800

I may want to do another compression check,..would that eliminate possible valve issues?

[LGAFF]

If the valves are hitting they are bent and therefore compression would be down....leakdown would be better.....

[oricale]

what do i need and can i do it in my garage?

[mike100]

...

ON EDIT- Nevermind- just read your previous postings. I would pull the engine if you can positively diagnose it.

[Pete]

Hello All as you know I have been working on the Z for a while and I have finally recieved my new Injectors from FIC,..(Jerry I need to order another seal kit!)..Anyway I had a high RPM knock at startup that everyone on here is sure its a dual mass flywheel issue ect due to sureley bad injectors!!!,...Well..I am wondering if I can boroscope the psitons through the sparkplug holes to verify that there is not a head issue(valves slapping the pistons).....

AND....if it is in fact a head issue can I change the head in the car???

Also All my WAZOO buddies...I almost have everything to get this thing done...let me know if we can set up a time or day?????

You still not figured/fix this.
If compression and leak down check good you don't need a boroscope or change the head.

You need to give more info, what you've done and checked already.
You check injectors,wires/plugs,coils?
Check engine light on?
Is it only do it at start up?
I would suggest take it to a pro and stop wasting time & money,guessing.

Pete