Question about my 200 block ?
15-02-2006, 06:49 PM
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Question about my 200 block ?
Right got the block home, maching looks spot on really good quality.
One thing I have noticed though (shown in pic below) is that the machining has gone through the head stud hole and through the little holes next to it, will this matter?
Looked on the head and this will just be blanked off at the head, can anyone explain?
One thing I have noticed though (shown in pic below) is that the machining has gone through the head stud hole and through the little holes next to it, will this matter?
Looked on the head and this will just be blanked off at the head, can anyone explain?
I hope it doesn't matter mate, i really do, cos I've seen all the shit luck you've had 
15-02-2006, 07:31 PM
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PeterLucas How come the stud is not in there out of intrest? Is it because of inspection of the crack or was it not in there when u bought the block?
15-02-2006, 07:37 PM
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Nope I just unscrewd the stud, its no where near the actual stud hole itself, but i just wanna make sure no oil/water mix can take place here.
Any engine experts?
Any engine experts?
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15-02-2006, 07:48 PM
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It will be fine mate, just use plenty of silicone under the studs at that point. My block has 10 long studs and a couple are like that, and haven't caused a problem. Just make sure you check the torque on the head nuts every couple of thousand miles and you should be ok. They do come loose!!!
15-02-2006, 07:56 PM
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Originally Posted by Stu @ M Developments
It does matter really Jon, those are oil feeds, one to the turbocharger.
It should have been capped ideally pal, take it back and have it done and make sure you convert the turbo oil feed to 2wd if yours is a 4wd head.
It should have been capped ideally pal, take it back and have it done and make sure you convert the turbo oil feed to 2wd if yours is a 4wd head.
indeed, i recall blanking mine off now with a brass plug
15-02-2006, 08:01 PM
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Right what do I acutally need to do at this point?
Ive traced this hole down to the crankshaft bearings, so how does it pressure feed the turbo? and why does this channel even go towards the head as its blanked at the head?
My car is a 2wd, so all I need to do is get this gallery welded up or blocked off and everything is cool?
Really appreciate all answers guys!
Ive traced this hole down to the crankshaft bearings, so how does it pressure feed the turbo? and why does this channel even go towards the head as its blanked at the head?
My car is a 2wd, so all I need to do is get this gallery welded up or blocked off and everything is cool?
Really appreciate all answers guys!
15-02-2006, 08:05 PM
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I machined up a brass plug and pressed it into the hole with loctite to stop it coming out and used a 2wd oil feed for the turbo. The 4x4 feeds from the head, and the 2wd from the pressure switch take off/ main gallery
15-02-2006, 08:05 PM
#15
A few snaps of one correctly modified.
http://img.photobucket.com/albums/06...10011Small.jpg
http://img.photobucket.com/albums/06...10012Small.jpg
http://img.photobucket.com/albums/06...0012Medium.jpg
http://img.photobucket.com/albums/06...0016Medium.jpg
http://img.photobucket.com/albums/06...0006Medium.jpg
The link below the pic is so you can access one thats not been resized for clarity.
http://img.photobucket.com/albums/06...10011Small.jpg
http://img.photobucket.com/albums/06...10012Small.jpg
http://img.photobucket.com/albums/06...0012Medium.jpg
http://img.photobucket.com/albums/06...0016Medium.jpg
http://img.photobucket.com/albums/06...0006Medium.jpg
The link below the pic is so you can access one thats not been resized for clarity.
15-02-2006, 08:11 PM
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Stu - it looks like your block is just as close to this gallery as well?
Ive just spoke to a few people and they have said that this normally happens when machining for studs?
If I block off this part then im cool right?
Im so bloody glad I asked! imagine if i just built it up
Ive just spoke to a few people and they have said that this normally happens when machining for studs?
If I block off this part then im cool right?
Im so bloody glad I asked! imagine if i just built it up
15-02-2006, 08:13 PM
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Originally Posted by Stu @ M Developments
Originally Posted by ^NUTTER^
indeed, i recall blanking mine off now with a brass plug 
15-02-2006, 08:18 PM
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Im gunna get drunk now and try not to think of cossies for more than 10 minutes, wish me luck
But ive just gotta get this hole blocked up and all is cool right?
But ive just gotta get this hole blocked up and all is cool right?
15-02-2006, 08:26 PM
#21
Norris Motorsport
Hello,
You do not need to do anything, it can stay just as it is and will be 100% fine.
This is because the centre studs in your block are in an enclosed boss down to the base of the block. (Unlike the other studs which break the water jacket during machining.)
Hence you can leave this just as it is and all will be well.
The small hole at the side of the centre boss is an oil feed from the main gallery that in 4X4 heads feed the turbocharger. You can chose to use this if you like or use a 2wd setup, either will be fine.
You do not need to do anything, it can stay just as it is and will be 100% fine.
This is because the centre studs in your block are in an enclosed boss down to the base of the block. (Unlike the other studs which break the water jacket during machining.)
Hence you can leave this just as it is and all will be well.
The small hole at the side of the centre boss is an oil feed from the main gallery that in 4X4 heads feed the turbocharger. You can chose to use this if you like or use a 2wd setup, either will be fine.
15-02-2006, 08:35 PM
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Karl
Surely if this small gallery next to the bolt is not blocked off and im using a 2wd head then oil pressure will be forced up the channel (meeting the blanked off head) and be forced UP or DOWN the head stud?
Surely if this small gallery next to the bolt is not blocked off and im using a 2wd head then oil pressure will be forced up the channel (meeting the blanked off head) and be forced UP or DOWN the head stud?
15-02-2006, 08:37 PM
#23
Ive seen more than a couple of engines built elsewhere with unusual oil pressure problems that have been put down to those bores being uncapped in all cases. We blank them, along with many other YB builders.
Now your buggered for advice, internet tuning at its best. (Or worst.. you pick)
Now your buggered for advice, internet tuning at its best. (Or worst.. you pick)
15-02-2006, 08:40 PM
#24
Norris Motorsport
Yes it will and there is no issue with this at all.
The standard car has exactly the same issue, oil is forced under pressure up the head bolt.
In your case oil may also be foreced down the centre main long stud as well, but, as I mentioned your centre long studs do not break into the water gallery as it is an enclosed boss unlike the other 4 long studs.
Hence all will be fine, please trust me on this!!!
The standard car has exactly the same issue, oil is forced under pressure up the head bolt.
In your case oil may also be foreced down the centre main long stud as well, but, as I mentioned your centre long studs do not break into the water gallery as it is an enclosed boss unlike the other 4 long studs.
Hence all will be fine, please trust me on this!!!
15-02-2006, 08:47 PM
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Karl, Stu
Cant thank you enough for this advice. Oil pressure obviously cant enter the water jacket but pressure could be lost around this point.
If I block it off its basically the saefest option.
Whats the best way to blank it off?
I knew I wouldnt be able to forget about cossies for more than 10 mins!
Cant thank you enough for this advice. Oil pressure obviously cant enter the water jacket but pressure could be lost around this point.
If I block it off its basically the saefest option.
Whats the best way to blank it off?
I knew I wouldnt be able to forget about cossies for more than 10 mins!
15-02-2006, 08:52 PM
#27
Norris Motorsport
There is no pressure problem whatsoever by leaving this oil hole open. The head bolt tube is captive once the head is torqued down and the centre long stud tube is also captive!
To explain a little more, when I long stud a 200 block the outer 4 studs of the 6 break through into the water jacket after boring through the std threads, where as the centre long studs require you to drill the entire depth of the block, hence never breaking into the water jacket.
I personally do blank them simply because it looks nicer before assembling the engine, BUT...............................
There will be no issues or pressure loss by leaving the centre oil feed open on your engine!!!
To explain a little more, when I long stud a 200 block the outer 4 studs of the 6 break through into the water jacket after boring through the std threads, where as the centre long studs require you to drill the entire depth of the block, hence never breaking into the water jacket.
I personally do blank them simply because it looks nicer before assembling the engine, BUT...............................
There will be no issues or pressure loss by leaving the centre oil feed open on your engine!!!
15-02-2006, 09:08 PM
#34
Norris Motorsport
Stu, looking at his picture above he has shown that he has 5 of the 6 studs installed with the centre one missing.
Based on this I assumed his issue is with the centre stud, and I told him that this issue on the centre stud poses no issue.
Based on this I assumed his issue is with the centre stud, and I told him that this issue on the centre stud poses no issue.
15-02-2006, 09:09 PM
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Originally Posted by Stu @ M Developments
Originally Posted by Cam
Stu
The head in the 1st pic looks familiar
The head in the 1st pic looks familiar
15-02-2006, 09:10 PM
#36
Re: Question about my 200 block ?
Originally Posted by PeterLucas
Right got the block home, maching looks spot on really good quality.
One thing I have noticed though (shown in pic below) is that the machining has gone through the head stud hole and through the little holes next to it, will this matter?
Looked on the head and this will just be blanked off at the head, can anyone explain?
One thing I have noticed though (shown in pic below) is that the machining has gone through the head stud hole and through the little holes next to it, will this matter?
Looked on the head and this will just be blanked off at the head, can anyone explain?
15-02-2006, 09:40 PM
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IMO you can clearly see that is a 6 long studded block,so where the 10 stud theory came about i do not know!!!I understood Karl straight away hence my agreeing with him!This site is wacky to say the least!!!No one actually seems to see things the same LOL.
15-02-2006, 10:10 PM
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My block is 6 studed (Outter 4 im going to use new head bolts).
Im going to leave the block as is and not insert any plug.
You guys are all brilliant and this place is such a great resource I thank you all.
Now time for more
Im going to leave the block as is and not insert any plug.
You guys are all brilliant and this place is such a great resource
I thank you all.Now time for more