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Larger Turbo On 96 E7-454?


Dlock13

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I have a 96 E7-454 with a S400 turbo and I'm wondering if anyone has ever put a larger turbo on this engine. I've installed 20% over spec injectors and will need to put another turbo on due to the band clamp breaking and partially destroying the fins. I know Rochester Fuel sells a larger turbo kit and so does Northwest Truck, but I noticed you can get the S400 with larger impellers and the new models have what is called extended tip technology. I have found that you can get Borg-Warner turbos now as well. Anyone have any thoughts on the matter or any experience doing so? Thanks

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The only advice I can offer on this subject is a negatory on the Borg-Warner. This is the one the E-TECHs have so much trouble with. I ran one for 144,000 miles till it came apart. Put my old reliable Schwitzer back on still going 800,000+ miles. Trouble is Mack won't sell you a Schwitzer anymore. All Borg-Warner now.

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I have a 96 E7-454 with a S400 turbo and I'm wondering if anyone has ever put a larger turbo on this engine. I've installed 20% over spec injectors and will need to put another turbo on due to the band clamp breaking and partially destroying the fins. I know Rochester Fuel sells a larger turbo kit and so does Northwest Truck, but I noticed you can get the S400 with larger impellers and the new models have what is called extended tip technology. I have found that you can get Borg-Warner turbos now as well. Anyone have any thoughts on the matter or any experience doing so? Thanks

I use a Borg-Warner S4 from Mack 5145m4 will produce 44 to 47 psi all day long.

gallery_133_137_10125.jpg

Thanks for hearing me out.

You can have the soap box now---------JIM

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Read your other post regarding turbos. Mack can't (or won't) get me the bigger, better Schwitzer like originally came on my 427. The current replacement B/W is smaller with about 5 psi lower boost. I got warranty on the B/W and thank God I kept my Schwitzer didn't turn it in for core.

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Read your other post regarding turbos. Mack can't (or won't) get me the bigger, better Schwitzer like originally came on my 427. The current replacement B/W is smaller with about 5 psi lower boost. I got warranty on the B/W and thank God I kept my Schwitzer didn't turn it in for core.

Don't ask Mack for the replacement turbo call Borg-Warner for what you want it to do.

Last year I put my model turbo on a 2005 460 with high flow injector's

Picked up his mpg from 4.0 to 5.7 and power to boot

Like I said before Mack {Volvo}only stocks what works for WASTE MANAGEMENT trucks their only costumer they have

gallery_133_137_10125.jpg

Thanks for hearing me out.

You can have the soap box now---------JIM

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Don't ask Mack for the replacement turbo call Borg-Warner for what you want it to do.

Last year I put my model turbo on a 2005 460 with high flow injector's

Picked up his mpg from 4.0 to 5.7 and power to boot

Like I said before Mack {Volvo}only stocks what works for WASTE MANAGEMENT trucks their only costumer they have

I called Borg-Warner and the part# that you are using is the Jacobs Stealth Brake turbo version of my part#. The only difference is an extra sealing groove and o-ring. I can replace the turbo with a model on a Detroit, but I would have to change the air inlet pipe and and to the inter-cooler pipe.

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hey I too have the stage 2 inj. from rochester fuel as well as the bigger turbo from them. dont really notice any change in fuel econ.(cant be helped in a RB roll off, boxs catch to much wind)... but power wise world of difference!! I only get 34-35 psi boost(25psi with jake on), exhaust gets a bit hot on a long climb but cools right down quickly on the down. I had to get the plastic intake breather pipe off a CL and cut it down it fit turbo, and got a pipe made with proper angle for hot pipe to air to air. I feel I need a bit more air flow though, so I got an old oem (tip turbo) hood scoop, and will be adding a K&N 6" flang filter to the breather to turbo pipe! Its alot harder to do this stuff to a RB than a CH or CL...BUT real trucks rattle!! check out my garge pics I think I have turbo pics

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I called Borg-Warner and the part# that you are using is the Jacobs Stealth Brake turbo version of my part#. The only difference is an extra sealing groove and o-ring. I can replace the turbo with a model on a Detroit, but I would have to change the air inlet pipe and and to the inter-cooler pipe.
I called Borg-Warner and the part# that you are using is the Jacobs Stealth Brake turbo version of my part

yes it is, but 5 years ago they superseded my old turbo 5145AM to a 5173mx since I don't have a stealth brake if you go to Mack (unless something has changed never seen a new service bulletin) they will only get you a 5145m4 if you have the stealth.

I can replace the turbo with a model on a Detroit, but I would have to change the air inlet pipe and and to the inter-cooler pipe.

Yes you can but that is not going to help your Mack parts dept.

What if that turbo fails and you have to be towed to a Mack dealer

You asked on a turbo options and I told you 5145m4

This turbo on my 454 and will produce 47 lbs of boost and put 477 to the ground with the fan locked

gallery_133_137_10125.jpg

Thanks for hearing me out.

You can have the soap box now---------JIM

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