Ke70 5K Build

[tojo2]

http://sydney.citysearch.com.au/E/V/SYDNE/0012/05/34/2.html mmmm google :hmm:

[anastasios]

Ok so coventry fasteners arent the distributors for helicoil anymore. A place called Hoopers Bearings stock recoil, so I bought the correct kit. Now I am looking at my situation and am trying to figure out what to do, what size drill bit do i use to drill out the old threads and do i then connect the tap to the drill? and use that to create the new threads?

 

After a quick google i found that i would need a 6.8mm drill bit for a 8x1.25 bolt (which is what the rocker post bolts are). Can someone confirm this?

Edited March 6, 2010 by anastasios

[SLO-030]

can you unscrew the long bolts for the head then just use bolts? instead of 2 nuts?

 

Good luck securing your rocker cover then :P

 

 

Anastasios,

 

Work out the size and pitch of the thread needed for the helicoil.

 

Dia of thread - Pitch = drill diameter needed.

 

Tapping for an M8x1.25 = 8mm - 1.25 = 6.75 (6.8) drill

 

" " M10x1.5 = 10mm - 1.5 = 8.5

 

Although the kits i have seen include the helicoils, insertion tool, drill and tap.

[anastasios]

Ok thanks heaps for that! I only have a 1/4 and 17/64 drill bits here, I guess its off to the hardware store.

[anastasios]

How important is it to have 3 locating pins in the flywheel? I just got it back from the machinist and they got one of the locating pins wrong and now only 1 lines up correctly.

[Taz_Rx]

Just take it back and tell them they farked up and you want it fixed for free. >|

[anastasios]

Yep its all good, I took it back to them and they fixed it, luckily they were open on Sunday!

[anastasios]

Great, the manifold stud threaded the head as I was tightening it on. Just bought another tap set for the 10x1.25 stud, and a 8.73mm steel drill bit. The car starts though! I have a couple hours after uni tonight to work on it and somehow have to get a pink slip and register it on Saturday, I'm pushing the deadline.

[anastasios]

Well it is now registered! Although I drilled out the hole for the tap too big, so I have a guy booked in on Monday to come and fix it, so the head is off again but its all good as I managed to get rego today which was the last day before blueslips!

[anastasios]

Ok so the car runs and there are no more thread problems, my problem now is that I have 50 compression on piston 1, any ideas on what this could be? rings?

[Evan G]

rings, hg, valve held open, valve timing?

 

valve not sealing correctly, spark plug not tight, dodgy compression tester

Edited March 22, 2010 by Evan G

[B.L.Z.BUB]

terrorists.

[Taz_Rx]

Did you end up with solid lifters? If so just open up the valve clearance a bit and test it again. That would be the most likely cause.

[anastasios]

Nopes they are hydraulic =/

[anastasios]

Ok so I have just found out that there is a leakage test that will pinpoint where my compression is being lost. I think it could be due to not shimming the rocker posts after having it shaved twice. Now I need to find someone who has that testing gear in Sydney.