Holset HX 40 bep .70ar turbine modification

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Hi. I have a 8 blade 16 cm t3 with the 76 millimeter exducer. The current housing has a 3 inch inner diameter and a 4 inch outer diameter on this the band. my downpipe is 3.75 inch inner diameter, can I open up the back housing to match the down pipe without negative affects?

I was looking into the Bep .70 AR housing and looking to do the same thing by match my 3.75 downpipe. I would cut off the 3 inch vband it comes with and attach a 3.75 inch pipe to it. Advantages and disadvantage?

The car is a 6 cylinder 2.5 liter 1 JZ. I know this isn't supraforums but there is a lot more activity is a lot more information. Thanks

I cannot post in the holset threads because I'm new. Can a moderator move this there?

 

[JusMX141]

Hi. I have a 8 blade 16 cm t3 with the 76 millimeter exducer. The current housing has a 3 inch inner diameter and a 4 inch outer diameter on this the band. my downpipe is 3.75 inch inner diameter, can I open up the back housing to match the down pipe without negative affects?

I believe you mean a 76mm turbine inducer.

I don't see why you can't port the outlet a bit- just stay away from the radius of the wheel. If you cut that part of the housing, it's junk.

I was looking into the Bep .70 AR housing and looking to do the same thing by match my 3.75 downpipe. I would cut off the 3 inch vband it comes with and attach a 3.75 inch pipe to it. Advantages and disadvantage?

It will work fine if you know a good cast welder.

I cannot post in the holset threads because I'm new. Can a moderator move this there?

Only if you don't want to post in the thread anymore. If I move it, you will no longer have permission to post in your own thread.

 

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I appreciate the response. the turbine housing is 6 bolt housing the Bep is the 4 bolt, how would I go about making that work? Does it come with the brackets to bolt onto the chra?


Also I want to ask if it were your car which housing would you use? 99 percent city driving and would only see a track once in its life. 5spd, 4.3 differential, 3700lbs

 

[JusMX141]

I appreciate the response. the turbine housing is 6 bolt housing the Bep is the 4 bolt, how would I go about making that work?

Use the hardware that comes on the BEP housing.

Does it come with the brackets to bolt onto the chra?

If you buy it new, it should. Sometimes guys will forget / lose the clamps and bolts on a used housing....if that happens, look to spend an additional $20 or so to get the correct clamps.

Also I want to ask if it were your car which housing would you use? 99 percent city driving and would only see a track once in its life. 5spd, 4.3 differential, 3700lbs

Well being that the smallest factory HX40 housing made is 16cm (huge), you're much better-off using the BEP T3 housing.

 

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Use the hardware that comes on the BEP housing.

If you buy it new, it should. Sometimes guys will forget / lose the clamps and bolts on a used housing....if that happens, look to spend an additional $20 or so to get the correct clamps.


Well being that the smallest factory HX40 housing made is 16cm (huge), you're much better-off using the BEP T3 housing.

I took your advice on finding bep housing, but none come in t4. I found timsturbo who is willing to build me a housing for similar price. my question is factory inner diameter of the housing outlet is 3.25, they are saying they can only do 3 inch. Is this a big issue?

also i recently acquired a hx52-55 in a trade...make more sense to a have a housing built for this instead of the hx40?

 

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decisions