Hi all, I have a turbo off of an 89 ctd and I was wondering if this would be better then the stock 1 on my 92 ctd? What all would I have to do to make it fit my intercooler? thanks,Terry

 

No, that would be a step backwards.

 

Dave, he'd be going from a 21 to an 18.5 housing, I didn't know there is a differance in the turbo itself is there? But if I was gonna take the stock one off, I'd at least make it worthwhile and get a 16cm housing. If the other turbo is in good shape, most turbo shops will buy it off you if you didn't want to sell it outright. Probably cover the cost of the housing.

 

you have it backwards

 

i think the 89's and maybe 90's were 18.5. Then up to 21 for a year or so, then back down to 18.5. The non intercooled h1c has a 3 inch compressor inlet instead of a 4 inch inlet so, regardless of exhaust housing size, it would be a step backwards as wanndiesel said.

 

Don't think I've seen any posts indicatiing the different inlet sizes, thanks.

 

Not only is the inlet smaller, but the compressor wheel is smaller, too. There is not as much air flow without the aftercooler -- by mass at least. So the older trucks ran higher manifold pressure and temperatures, but roughly the same number of air molecules, and similar piston pressures, but higher piston temps.

The aftercooler was added to reduce piston temperatures, which reduces NOx emissions. They did not use it as a "performance enhancer".

A wh1c or hx35 with a larger compressor and Map width enhancement is normally the way to go. Unless you get a custom "hybrid" turbo . . .

 

Yes the non I/C turbo has a 3 inch inlet and 2 inch outlet compared the 4 inch inlet and 3 inch oulet of the I/C version.
Some of call it the "baby H1C" for obvious reasons.
I'm working an a custom or "Frankenturbo" that will have the compressor housing from a 94 WH1C, and probably a stage II kit from HTT married to my baby H1C with the 16 cm housing.
And a custom crossover pipe and no intercooler...for now. That'll get me in enough trouble.
Jay