I'm looking at a used whic turbo from a 94 Dodge CTD. It appears to be complete with the wastegqate actuator.

Does anyone have information on these? Would it be a good idea to swap it out with the stock non-wastegated turbo on my 89?

Edwin

 

I'm running one on mine, actually. It's basically the same as an HX-35. It makes a very nice upgrade. It's enough turbo for anything short of POD's. If you keep the 12 cm turbine housing it makes the truck a lot of fun in traffic - instant spool up. You'll have to make a new intake duct and if you keep the 12 cm housing you'll have to shorten or move the downpipe 1.5 inches back. Plus if you pull out the silencer ring it sounds

 

How do I handle the fact that it appears to be setup for an intercooler? Do I swap the compressor housing, or use the 12 cm WG housing on my turbo?

Thanks

Edwin

 

You can run it Non Intercooled. Just takes a bit of Work. Check out the pictures Here http://hometown.aol.com/rhfordman/fummins.html

 

What little info I've seen so far, I can use the parts of one turbo on the other. Therefore I could take the 12cm WG housing off it and put it on my existing turbo or take my compressor housing off and put it on the WH1C. That way I could fit it to my current setup almost with no pain whatever. Next question is where does the WG actuator hook up? How hard is it to tune the max boost? AFAIK the max boost of the WH1C is 18 PSI while my H1C is 25 PSI. I don't want to lose out on the top end.

Thanks for your help.

Edwin

 

I have the 12cm as well, it gave me lower EGTs than the 16cm when towing. The 16 only benefits over the 12 when your running lots of fuel through PODs at near governed RPM, where the 12 has a lot of drive pressure. At the lower RPMs, the 16 just couldn't give me enough air to keep things cool, as evident with the smoke and high EGT especially after an upshift. Adjusting the boost is easy with the actuator, but it can be a pain to get it off the turbo. It's spring loaded and it takes air pressure to release the spring tension. I hook it up to regulated 40 psi on my compressor and charge it, thus releasing the tension where you can get it off the wastegate pin. At that point, you can then adjust the turnbuckle-rod in for more boost, out for less. One turn equals to about one psi. I adjust mine for 26psi manifold pressure, but since you don't have an intercooler, you'll probably want the manifold to read higher yet. Intercoolers will show about a 5-6 psi boost drop across it due to air condensing when it's cooled, giving a lower reading at the manifold than the turbo outlet. The boost line should be connect to the output of the compressor side. If you don't want the wastegate to work, simply leave the boost line off, but high drive pressures and turbo overspeed could result with lots of fueling. Also, install the newer compressor. The reason is that the older H1Cs will compressor stall (annoying choo-choo sounds) at certain RPMs and high boost levels. This has been designed out of the newer WH1Cs and HX-35s.

Mike

 

Your stock non intercooled compressor housing will not fit over the larger compressor wheel of the WH1C.
You will have to use the comp housing from the WH1C and adapt the outlet.
Jay

 

you will also WANT to use the wh1c compressor housing. it has a modified housing that will eliminate "surging", or "flutter" that you may experience when running the 12cm housing. well worth the little bit of extra work making it fit.

 

What size compressor does the 89 have and what size is the wh1c compressor, for that matter what size is the hx35 compressor

 

What is a good price for the used WH1C?

 

What is a good price for the used WH1C?



Not too much over 200 bucks, at least from what I've seen on ebay

 

I wouldn't pay over $250 before shipping. The WH1C's dont show up as often on EBay, but they usually go a good bit cheaper than the HX-35's.

 

If the non-intercooled turbo's have a smller compressor wheel then are the later first gens capable of producing more boost?

 

I get 29-30 psi in the top of 3rd 4th and 5th if I'm brave enough

 

If both trucks are stock, no. But the later compressor is better once you add more fuel.

Non intercooled trucks show more boost, all things being equal. An intercooler lowers the boost pressure at the manifold by cooling the air, which lowers the pressure. No air is lost and there is no restriction, it just becomes denser which lowers the pressure.