[Nbeaulieu250]

I have a 93 w350 auto. I’m doing a restoration on it right now and have the motor pulled. So far I have gauges, 4in exhaust, and kdp fix. While the motor is out I want to put new intake on, apr head studs, new turbo and injectors. I will be tuning pump when motor goes back in. I have done some research and thinking I want a hx35 but I’m confused if a hx35 or hx35w is better, if they are both direct bolt on, and what injectors would be a good combo and could handle a bigger turbo in the future. Smokey doesn’t bother me just want a good quality set up.

 

[myother4x4isaCJ7]

Hx35 and hx35w are different names for the same turbo. Do you need new injectors currently? Factory injectors and a turned up pump will max out a hx35 anyway. You don’t need studs at that point either but hey it’s your money!!!! I’m currently running 40+psi boost with a factory 260k mile head gasket and bolts.

 

[Nbeaulieu250]

The factory injectors are in good shape, just wondering if I should go bigger. Truck only has 140k on it. Reason for studs is I plan on pushing a lot more power down the road and figured it would be easier to do them now with the motor out. If factory studs are known to hold up well then I might just leave them be.

 

[9297oldram]

You'll be amazed at what the free mods will give you, the hx35 will spool a little faster then the stock turbo.

 

[myother4x4isaCJ7]

The factory injectors are in good shape, just wondering if I should go bigger. Truck only has 140k on it. Reason for studs is I plan on pushing a lot more power down the road and figured it would be easier to do them now with the motor out. If factory studs are known to hold up well then I might just leave them be.

If you plan on going big later I would install studs if you already have it apart. Then run for now with stock injectors and an hx35.... leaves the door open for whatever you want later. But at this point you do not need studs. Injectors are very easy to replace in truck that’s why I say wait on those till you have a better turbo. Just my opinion.

 

[myother4x4isaCJ7]

What are your later hp goals? Eric at THD could steer you in the right direction.... just FYI you may end up spending money on go fast parts sooner than later

 

[u2slow]

Factory injectors and a turned up pump will max out a hx35 anyway.... I’m currently running 40+psi boost with a factory 260k mile head gasket and bolts.

I have not proven one way or the other, but its my understanding the non-IC injectors & pump can max out the HX35 because they fuel more. I run 5x.012" inj tips and HX35w in my '93 and its a 'sporty' combo for a truck that works hard. Stock HG and bolts... don't have a boost gauge yet.

 

[Nbeaulieu250]

What are your later hp goals? Eric at THD could steer you in the right direction.... just FYI you may end up spending money on go fast parts sooner than later <img src="http://www.cumminsforum.com/forum/images/smilies/wink.gif" border="0" alt="" title="Wink" class="inlineimg" />

Don’t really have a set goal on hp. Truck is going to be a weekend warrior with occasional hauling. It will probably end up being a continuous money pit but there’s nothing wrong with that haha. Also what’s a good price to pay for a hx35? Would prefer new or reman.

 

[Remps]

I would leave the collar on the fuel screw until you get larger injectors, for the sake of your shutoff solenoid. A cranked pump, tiny injectors, and sporty driving will most likely result in backwashing the rubber tip off the plunger in the solenoid. Especially if you put in a 3200 spring. Top end power is way better with larger injectors and a ve pump anyway. Just my opinion but I'd swap injectors for top end performance and for solenoid reliability reasons. I wouldn't pay more than 300 for an hx35, so much better turbos out there for under $1200. The 35 is pretty small and restrictive, I can easily hit 50 psi with mine with stock n/IC injectors and maxed fuel screw.

 

[Remps]

Just an FYI, money well spent would be the flexplate and torque converter while the engine is out.

 

[myother4x4isaCJ7]

I have not proven one way or the other, but its my understanding the non-IC injectors & pump can max out the HX35 because they fuel more. I run 5x.012" inj tips and HX35w in my '93 and its a 'sporty' combo for a truck that works hard. Stock HG and bolts... don't have a boost gauge yet.

I was able to hit 35psi and 1300+ egt with stock injectors with my 1992 with a hx35. I’d call that the max for that turbo. When I installed 5x12s I had to turn the pump down until I got my he351 in.

 

[Nbeaulieu250]

Just an FYI, money well spent would be the flexplate and torque converter while the engine is out.

Tranny was rebuilt about 4K ago. What’s a good torque converter? I’ve done a lot of research but seems like info is all companies trying to sell their converter. Also forgot to mention I have thd fuel pin and 3200 gov spring for when the motor goes back in

 

[9297oldram]

Tranny was rebuilt about 4K ago. What’s a good torque converter? I’ve done a lot of research but seems like info is all companies trying to sell their converter. Also forgot to mention I have thd fuel pin and 3200 gov spring for when the motor goes back in

RexMax is a CF vendor.

 

[1972RedNeck]

I have not proven one way or the other, but its my understanding the non-IC injectors & pump can max out the HX35 because they fuel more. I run 5x.012" inj tips and HX35w in my '93 and its a 'sporty' combo for a truck that works hard. Stock HG and bolts... don't have a boost gauge yet.

Stock I/C injectors can get the EGT's plenty toasty with an HX35 and turned up pump.

That being said, as others have mentioned, my FSS plunger lasted about 1 day with the maxed pump.

 

[ofelas.5z]

If you want a good converter, look no further than DPC, TCS Canada, & Goerend. In no particular order.

 

[u2slow]

Stock I/C injectors can get the EGT's plenty toasty with an HX35 and turned up pump.

That being said, as others have mentioned, my FSS plunger lasted about 1 day with the maxed pump.

There's not much power screw adjustment on a IC pump (more with non-IC pump). I have mine bottomed plus fuel pin and 3200 spring. Is that considered 'maxed'? No FSS issues so far (7 years, 45,000km later).

As with any well-used system of components, any small change can have a chain-reaction effect.

 

[myother4x4isaCJ7]

There's not much power screw adjustment on a IC pump (more with non-IC pump). I have mine bottomed plus fuel pin and 3200 spring. Is that considered 'maxed'? No FSS issues so far (7 years, 45,000km later).

As with any well-used system of components, any small change can have a chain-reaction effect.

Depends on who you talk to.... I’d say that’s the max for a stock pump but you could get more fueling with a longer fuel screw.

 

[1972RedNeck]

There's not much power screw adjustment on a IC pump (more with non-IC pump). I have mine bottomed plus fuel pin and 3200 spring. Is that considered 'maxed'? No FSS issues so far (7 years, 45,000km later).

I had no problem with the FSS plunger with the stock scre bottomed out. When I got the longer fuel screw and maxed it out, then it ate the plunger pronto.