Help identify Holset turbo
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Help identify Holset turbo
I am trying to identify the turbo on my father in laws 1992 350 dually. When he bought it he was told it was an aftermarket turbo. The only markings on the turbo is the name Holset and a funny looking H and a small 3. I am curious as to which one he has as he runs substantially higher EGT's than me but shows to be making 40 psi boost. Also there is no wastegate!
#4
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A pic would help tons. The h1c is the stock unit for a 92. It may have a smaller exhaust housing (thus the "upgrade") which could explain the higher EGTs. Or it may have been hybridized.
#6
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appears stock to me. i know the '92 models came stock with a 22cm exhaust housing. possibility of an 18.5cm h1c exhaust housing was mated to the center section? but even with an 18.5cm housing, egts shouldn't be too high should they?
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I am just curious because we are wanting to do some upgrades but are not sure what is actually already done.
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