commonrail stock turbo questions

[rattlebox93]

has anyone had any experiance with running a stock commonrail turbo on a first gen truck mine went bad and want a better raplacement without the 1700 you have to pay for a high tech or phat shaft

[SChandler]

Most people use an HX 35/12cm^2 housing combo off of a 2nd gen. The 3rd gens have a tiny exhaust housing (9cm^2, IIRC) that is too small for our trucks. The HX35 can be found cheap on Ebay (<$300 dollars) but it is not much of an upgrade over the H1C on the intercooled trucks.

[rattlebox93]

the automatic trucks had the 9cm housings diddent the manual trucks have a 12cm? idk what about the htt quick spool hybrid h1c hx40's i heard form tworline that the hx40's like to expload

[CumminsPride]

It's a 60/65/9cm IIRC. It does have an improved wastegate over the HX and the HY. All common rails had a 9cm housing. I would like to use on in a small set of twins.

[SChandler]

HX40's explode when abused (i.e. barked or hit with lots of nitrous). The compressor and turbine wheels are larger than a HX35 but use the same shaft as the HX35. From what I've gathered, a HX40 makes a good turbo in a towing application, but something with a bigger shaft is better if the turbo will be abused (S300 or others). The compressor upgrades use the larger compressor wheel from the HX40 (for a HX35 upgrade) or a WH1e (for a H1c upgrade) while maintaining the smaller exhaust wheel of the HX35/H1c. I haven't heard of any exploding, but I don't have any personal experience with them either.

[rattlebox93]

yeah i have seen a guy use a stock commonrail turbo over a silver bullet as twins on a first gen but that small housing might make it get hot in a single configuration

[rattlebox93]

yeah i have seen a guy use a stock commonrail turbo over a silver bullet as twins on a first gen but that small housing might make it get hot in a single configuration

[oldestof11]

I dont see how the housing makes a difference as those truck are making +300hp stock and they are not that restrictive....

[Begle1]

I dont see how the housing makes a difference as those truck are making +300hp stock and they are not that restrictive....

But those trucks also have better cams and better heads with more valves.

[SChandler]

I dont see how the housing makes a difference as those truck are making +300hp stock and they are not that restrictive....

My guess would be that it is because the trucks fuel differently. 3rd Gens are computer controlled and thus the fueling curve can be made to work with the turbo/turbine housing. Plus, the greater atomization of the fuel from increased injection pressure (>20k psi vs. 5-10k psi for a VE) gives more power for the same amount of fuel. TDR did a series of articles in their magazine about modifying 3rd gens and they found that after about 350hp (IIRC) the housings became overly restrictive.

[SChandler]

Begle slipped one in while I was typing. He brings up a good point. They have a lot more air flow built into the motor than we do.

[gear jammer 91"]

I talked to a common rail owner on his second engine, he told me stock they can see 1300 degrees. Don't know if it's cause of the turbine housing, or the amount of fuel they spray. I have heard of more than a couple melting down with minimal mods cause of high egt issue's.

Just makes me glad I got a first gen.

[CumminsPride]

yeah i have seen a guy use a stock commonrail turbo over a silver bullet as twins on a first gen but that small housing might make it get hot in a single configuration

I was thinking more like an HX55 in a 19cm housing!

[rattlebox93]

yeah my fried has a 05 thats making 750hp and 1375tq on fuel only and ragularly sees 1800 degrees but hes got billet pistons and from what i have heard the commonrail head flows less than the newer p pump 12v heads idk those turbos cool a 325hp truck stock and i doubt i will see much more than that out of my truck i have one that wont cost me anything im am gonna try it worst case i ment my engine lol the it would be ve pump 24 valve time!!!!

[CumminsPride]

HAHAHAHA now that would be a conversasion piece.