ok have saved up a bit more money to spend on the project.. a few questions asked. whats the best way to fix a stripped out bolt hole in the head..the one that holds my rocker cover on the guy who had it before me had pput a big roofing screw in it and wrecked all the thread into the head..now obviously i need to re tap it but its too small to go 6mm or the imperial equivalent and 8 mm the next size up is quite large..just hoping that i dont run the risk of cutting into a water galley or anything when i do this..anyone know any other alternatives? cheers josh

hey guys saved a bit more money to spend on my project and have a few questions..first of all i want to get the rocker cover back on so i can get a bit of oil in the engine..what is the best way to go about re-doing a bolt hole? the old owner had put a big roof screw in one of the rocker cover holes and has stripped out the thread..it is a 6mm hole and the next size up is 8 mm and wondering if that is too big to tap? not sure about water galleys etc..i cant use the imperial equivalent (5/16?) as the hole is too stripped..any one got any other ideas on how i would go about doing this? cheers

You could drill it out a little and heli-coil it. I haven't used one personally, but someone heli-coiled the SP hole/thread in the head of one of my motorbikes, I reckon it's stronger than anything you could ever tap into it, and using a heli-coil, you can regain the original threaded hole size.

http://www.youtube.com/watch?v=RFYa6sjhh_E

(I would use threadlocker on it just to be sure)

Or the el-cheapo way you could do it is drill it out, tap it, centrepunch in the end of the right sized bolt for the new thread, drill into it, tap it the same as the original threaded hole, cut the end of the bolt off, put a bolt the size of the thread in the middle of the big bolt, lock the bolt to the centre threaded big bolt with a locknut, put some heavy duty Loctite thread locker on the threads of the bigger bolt with the small threaded bolt in the middle (DONT PUT THREADLOCK ON THE SMALL BOLT), screw it into the hole in your cylinder head using the locknutted bolt. Leave it for 24hrs and then undo the locknut and undo the small bolt. Ta-daaa!!!!

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Sam-U-El/Racer135
1973 B110 - http://ozdat.com/forum/viewtopic.php?f=60&t=21539
1972 B110
1978 120Y sdn
1973 B120 - dead
1971 VB110 4dr - sold
Others:
1995 Proton Wira - daily sh#tbox

hey mate handy vid to watch but im liking the sounds of the cheaper way the heli coil gear looks a bit more expensive...thanks for the advice though give me something to do

im trying to get some pics up but its not working...

have a question about what is what with the radiator outlet and where a few pipes go..pics will explain better..



are hoses meant to run like this? and at the back of the head which would sit closest to the firewall is this meant for a heater outlet? if so where would the left outlet on the radiator outlet then go?

Also the pipe coming out of the block in the below pic just under the manifold is this just an emissions thing like blow by from memory it was connected into the back of the original manifold?



and a few other pics while im at it

13 x 8's



my attempt at the rocker cover



cheers

Cover looks good mate

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120Y 4DOOR SEDAN SR20DE WITH ITB'S

http://datsun1200.com/modules/newbb/vie ... post494892

quite happy after this afternoons efforts!! after a bit of mucking around i tapped the inside out of a 8mmm bolt down to a 6mm thread adn after sorting out some crushed thread issues (thanks vice) i had the rocker cover on and bolted up...finally got to get some oil in the engine and turned it over a few times..now i can start on something else..

Those mag's should look fkn sweet with a good polish with Autosol Metal polish (about $10 a tube, lasts ages).

Had a similar set on my Valiant, if only those Mothers Power Ball polishing head things existed back then....wouldve been mirrorific!

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Sam-U-El/Racer135
1973 B110 - http://ozdat.com/forum/viewtopic.php?f=60&t=21539
1972 B110
1978 120Y sdn
1973 B120 - dead
1971 VB110 4dr - sold
Others:
1995 Proton Wira - daily sh#tbox

hey yeh rims would look sweet can't wait til ive got a spare 60 bucks for one of those polishing balls though...i hope they do the job alright..struggle to find tyres for them though would have to stretch a 195 or so tyre over them i think

can anyone help with these questions? only two issues i need to sort out that i can think of??

cheers..

hey everyone..car may be up for sale..have been doing some thinking and finance the project is clashing with every thing else i want to do (the usual story) still not fully decided yet though..anyone interested? not entirely sure on what to do..just thought id throw it out there..

Can't even leave the project in the shed and do stuff to it as it becomes affordable?

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Sam-U-El/Racer135
1973 B110 - http://ozdat.com/forum/viewtopic.php?f=60&t=21539
1972 B110
1978 120Y sdn
1973 B120 - dead
1971 VB110 4dr - sold
Others:
1995 Proton Wira - daily sh#tbox

yeh well thats what im looking at doing now just going to take a lot longer to complete but will be so worth it.plus i got quite an impressive pay rise at work going 2nd to third year apprentice so things are starting to look up.

Polishing balls?

I used the finest wet and dry sandpaper I could get, wet sanded my jellies, then used some autosol, a toothbrush and a cheap rag. Came up great, and I think i spent under $20.

As for the tyres, you should be able to get 205's from the wreckers. I've seen wider than that in 14 inch as well though.

There's no point going to a wider rim if you're going to stick the same profile tyres on it. If anything, it'll give you less grip.

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yeh gave up on the sanding idea..don't know if they are even going to go on. only reason they would go on is because they would look cool..no performance benefits intended.