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Post by trikimu on Feb 13, 2007 14:33:59 GMT 11
Does anyone have a pic of the best place to plumb in a boost guage on a 4JG2 powered isuzu MU auto.
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mudslinger
Isuzu Junior
needs more curry
Posts: 105
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Post by mudslinger on Feb 13, 2007 15:01:48 GMT 11
i plumbed my gauge in the line that goes between the turbo and the watse gate i get a readin of 10 psi. not sure weather it right or not but get a readin nether the less
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Post by trikimu on Feb 13, 2007 15:16:34 GMT 11
cool thanks, i had been warned againts doing that incase the guage failed for some reason. How about oil temp guage
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mattmurdoch
Isuzu Junior
when the going gets rough..
Posts: 68
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Post by mattmurdoch on Feb 13, 2007 15:58:16 GMT 11
im not to sure if a boost gauge would work very well on a diesel as diesil engines dont create their own vacume, thats why the have a vein pump or vacume pump on the back of the alternator, but i could be rong, best bet would be to go off the waste gate line, use a "T" join and that way if the gauge dose fail its still bypassing the t join, just make sure you use hose clamps
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Post by geeves on Feb 13, 2007 19:27:11 GMT 11
There should be a small pipe attached above the turbo that goes to the top of the fuel pump. This is used to tell the pump how much boost is being applied and is the hose to T into. If you are useing a gauge that also reads vacume then use a T piece that has a restictor in the line to the gauge or the needle might bounce around a lot at idle.
Oil temp gauge has never come up before but a good idea. Only place I can think of is to share the oil pressure gauge hole but your on your own as to how
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mudslinger
Isuzu Junior
needs more curry
Posts: 105
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Post by mudslinger on Feb 13, 2007 19:34:16 GMT 11
my gauge works fine needle doesnt bounce and is pretty accurate
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Post by geeves on Feb 13, 2007 20:06:31 GMT 11
Some do some dont even if same brand. The interesting part is that mine will show 17psi if conected directly to either the hose I described or the waste gate hose but shakes vilently at idle but with the t peice only gives 14psi
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Post by trikimu on Feb 13, 2007 20:47:42 GMT 11
i spose if i got a brass splitter, sort of a one into 2 type thing i could plumb it in where the existing oil pressure sender is then plumb the oil pressure sender and oil temp sender into each part of the splitter. but is it really worth it. Engine water temp is prob good enuf.
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Post by wizbru on Feb 14, 2007 5:35:32 GMT 11
I've got one of the gauges that Repco sell for about $40 - came with a tee piece (with restricter imbedded) works fine - Stock Wizard (3.1) plumbed into boost compensater line - Shows 12psi max boost - steady at idle
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mudslinger
Isuzu Junior
needs more curry
Posts: 105
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Post by mudslinger on Feb 14, 2007 14:37:08 GMT 11
i think that the gauge i got a auto meter one usin the t piece to wit restricter no probs steady needle
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