Turbo kits 63mm vs. 66mm - Ford Powerstroke Diesel Forum
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Old 08-15-2013, 08:50 PM
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Cool Turbo kits 63mm vs. 66mm

Guys, I know a few members here have recently installed the confederate diesel kits and there are other projects taking place. Here is what I would please like to know or see from members to better my decision on upgrading. And Can we please not get off topic I'm tired of hearing ppl cry about confederate diesel, I live in California and am not sticking up for CFD I just want info, to be honest I'm leaning to SPE because quality, R&D, and craftsmanship.

1.) how does the 66mm turbo do towing a light to moderate load?
2.) different turbo options and best by application such as EFR?
3.) Can any of these f***ing vendors get some video with out dumb *** music, NO MUSIC, I want to hear the spool, turbo, in cab, drive by!!!!!!!!!!(sorry vendors but seriously)

Btw I have seen a few confederate videos, I think it's dman115 truck, and power labs spe kit the installed, but the videos aren't that great except for I think dman115 videos pulling and lighting up the tires.

Last edited by THECVN11; 08-15-2013 at 09:00 PM.
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Old 08-16-2013, 09:55 AM
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You have seen all of the video's it sounds like.
The 66mm is ok for light loads, you will just need to use the manual mode of the trans and keep the rpm's up and egt's down.

We have all types of custom options to meet any end users needs.

I would imagine other vendors would be able to substitute turbo's the same as us.

Thank you for the interest.

Most of the customers we have delivered 66mm units to do not tow at all.
If you think you will be towing just stick with the 63mm, or an efr.
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Old 08-16-2013, 05:44 PM
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Thank you for responding CFD. Im leaning towards the 66, I have coil overs in the rear and cant tow much just a wakeboard boat every once in a while. Question for CFD or members that have installed the kit.

1.) How much boost do you make with the 66mm on stock fueling and how much on dual fuelers(roughly)?

CFD I like the intake tubes and how you have ports for injectables, the 66mm on dman's truck sounds good, once the turbo lights!
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Old 08-16-2013, 06:57 PM
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I'd say anyone could tow with either turbo. The size limits how low in the rpm band you can go. With my 363 0.91 twin scroll and at 6000 feet, I'd say my engine is pretty useless below 1800 rpm. Keep in mind it's useless below 1600 rpm stock anyway. I think guys are saying the 366 moves that rpm up to about 2000 rpm and the engine is only useful above that rpm. That's my take on it all with my very limited experience.
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Old 08-16-2013, 07:01 PM
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37-38 stk cp4
45-50 ii 55% over
Anymore than that the 366 is spinning too fast.
A couple guys have pushed the 366 over 50 psi.
They have all bent rods.

I hope this helps with your decision
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Old 08-16-2013, 07:21 PM
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Justin, are my thoughts about the different turbos about right, or is there more to it?
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Old 08-16-2013, 07:25 PM
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Again thanks for the responses guys. Dirtbikepilot, what boost psi are you seeing and if possible do you think you can post some videos up. I would like to see smoke from a dead stop, lag, spool up......
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Old 08-16-2013, 08:18 PM
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Our internet connection out here is painfully slow to upload videos, so I'll have to pass on that idea. The smoke on mine is limited by me using the least smoky low boost fueling in the mini maxx. It's just a really light smoke before the boost comes on at all. Once the boost starts, the computer feeds it more fuel and it smokes quite a bit more until the turbo finishes spooling. I may change to a tighter exhaust housing to help with lower rpm at the high altitude I live at.

If I don't hold sixth gear manually below 70 mph and let it down shift, lag isn't very bad at all. From a dead stop it probably takes 50% longer than the stock turbo to light. It isn't too bad from a lag perspective, but I'm used to older cummins trucks too.

Max boost is about 35 in the midrange, dropping to about 31 at high rpm full throttle operation. That's to the best of my memory. I haven't driven it too much yet.
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Old 08-17-2013, 03:32 PM
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Quote:
Originally Posted by DirtBikePilot View Post
Justin, are my thoughts about the different turbos about right, or is there more to it?
No you are right a 66mm you will need to stay above 1900-2000 grand towing.
Like I said out of all the kits we sell I can't think of one customer who bought the 66mm and still tows anything on a regular basis.


The 63mm has the 68mm turbine.

It sot the 3mm difference in cw size its the 12mm difference in turbine size.
The 366 comes with an 80mm turbine.
We can build any turbo a customer needs and balance it on a west coast balancer. Typically it is just more cost effective to use an out of the box turbo.
We also like to provide the customer with a part that can be bought anywhere in the country from a diesel supply house rather than just from us custom.
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Old 08-17-2013, 04:12 PM
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How much does elevation effect spool? I'm at about 500ft above sea level so would I notice any difference in spool rpm than say DirtBikePilot whos at 6000ft, or would it be so little that it wouldnt be noticeable?
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