Why dont 1gen have wastegates?

Old school. Nobody really cared that the engine puffed smoke when you accellerated. So, they had to cut emissions further with the higher psi p-pump and do away with the accelleration puff.

So, you neck/squeeze down the turbine housing and add a gate to prevent over speeding/boosting. Sure they worked great untill you add injectors and more fuel. The housings from 1994 were not all that great of a design as it has limited flow when the gate was opened.OK for low fuel setting I suppose, but today, that same turbo has a really big gate so to speak.

you can just change the exhaust housing on them to a smaller one very inexpensively and unless you start huge increases in power you can get by without a waste gate on the new one our 91 will have 900,000 on it in a few months this way

The stock turbine housings on our 1st gens, weather it be a 21 or 18.5, were too big to make excess boost pressure. Bigger turbine housing = slower spoolup and less boost.

You don't need (or want) a wastegate running a 12cm housing with 7mm (stock IC) injectors. It will make a max of around 28psi boost with the wastegate wired shut and the pump turned all the way up. That combo works really well on a stick truck BTW, and non-wastegated 12cm housings are not too spendy.

Will a housing from a HX35W work on a 1st gen turbo?

The H1C and HX35 exhaust housings interchange as far as bolting together properly. The issue is the exhaust pipe if your going from a nonwaste gated housing to a WG housing. On our 1st gens to use a WG housing you need to shorten the exhaust pipe 1.25". Some have got lucky and been able to slide the pipe back.

how much horepower can you make without worrying about getting a wastegate

all you could ever dream about.................and more. If you don't have HP now, that funny looking casting on the rear of the turbo isn't going to help you none.

Greenleaf said:

all you could ever dream about.................and more. If you don't have HP now, that funny looking casting on the rear of the turbo isn't going to help you none.

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Who says i dont:thumbsup

LOL :beer