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Hi Guys, We removed the head on a 6-cyl 88 VL and had it pressure tested and it cant be re-used. Any advice about buying a good one from the wreckers; what to look for, etc?
Is the 86-90 Skyline head exactly the same? Is a re-co head a better way to go? Also, on the VRS, it says to replace the head bolts is that necessary? Thanks. Edited by user Saturday, 26 December 2009 5:04:34 AM(UTC)
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Rank: Veteran
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id recomend a reco head for sure, one from the wreckers is unknown (even if it looks ok) and half worn out, a reco head is gaureenteed good, head bolts can strech so new ones are better to use if you budget allows
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The head bolts are "torque to yield" which means they are already stretched a controlled amount during the initial installation (helps with the head clamping force), and any will not be suitable for re-use.
A lot of people do re-use them, without any problems, but I wouldnt risk it, as theres a greater chance of snapping one when youre torquing them up.
Cheers,
Mick
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Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
Cheers,
Mick
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Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
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I would say that you would need to completely change the tightening procedure to re-use torqe to yield bolts. Doubt that theyd break, but to get the correct tension would be guesswork at best as their elasticity levels would have changed.
Skyline heads were the same through to about 92. These are falling off the road at an incredible rate now so theres not likely to be much problem finding one. I bought a complete Skyline engine in great running order from a wrecker for $200 a while back because he was bragging that they were such a good engine they had a hard time selling the. Only thing is the front pulley is different on the Commodore.
Another thing while you have the head off, check the heater outlet on the side of the block above the starter. These are an absolute bitch and theyre designed so you cant get them off without dismantling everything around them... and by now you know that means manifolds and all.
Not sure why they had to be so difficult...
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Hi guys I decided to replace the water outlet pipe, that bolts into the engine block, just above the starter motor. I couldnt buy an original one, so I got one from Enzed, made of brass. Will brass be suitable to use in this application? I dont recall seeing it much on engine cooling systems. Will it withstand the temperatures etc...?
Any advice appreciated.
Mike.
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Brass will be fine. Most welsh plugs are made of brass, although its increasingly common for crap steel ones to be sold by the bargain auto-parts suppliers these days.
Cheers,
Mick
_______________________________________________________________
Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
Cheers,
Mick
_______________________________________________________________
Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
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Rank: Veteran
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brass has exellent crosion resistance, far better than anything on the else on the engine
the cheap steel welsh plugs are useless, only last a few years
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