On3 70 mm and 76 mm - Ford Mustang Forums : Corral.net Mustang Forum
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post #1 of 29 Old 01-03-2017, 09:44 PM Thread Starter
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On3 70 mm and 76 mm

Geting ready to order my kit.my car will mostly be all street.should i order the 70 with it or the 76 what are the thoughts on this car has tfs heads intake f 303 cam.Thanks for the info

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post #2 of 29 Old 01-04-2017, 09:21 AM
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F-cam alum headed 302 will use a 70 just fine. depends more on the exhaust housings and I'm not familiar with the on3 options. I'd go with a 70 though.

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post #3 of 29 Old 01-04-2017, 11:27 AM Thread Starter
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Im going to be running it to no cats and duel Flowmaster out the back.
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post #4 of 29 Old 01-04-2017, 11:47 AM
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The On3 76 has a 65mm exhaust turbine, which is plenty for a 302. I'd even sell you mine if you're interested, haha. I have it on a 351 and it's waaaaay too small.

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post #6 of 29 Old 01-04-2017, 07:54 PM
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76 will be fine on a 302 with h/c/i i had full spool by 3k
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post #7 of 29 Old 01-04-2017, 08:38 PM Thread Starter
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Midnight thanks for the post yes i have seen there kits they look pretty nice i need one for a 95.it sounds like 76 might be worth a shot.
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post #8 of 29 Old 01-05-2017, 01:00 PM
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post #9 of 29 Old 01-05-2017, 05:43 PM
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70mm

1993 Teal Cobra #2531 1 of 452, 347, Precision 7675, The entire kitchen sink....maybe 2 kitchen sinks at this point!
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post #10 of 29 Old 01-05-2017, 06:31 PM
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I've never seen a negative CXR thread but I've seen lots for O3 .. Lots of fitment issues and ####ty customer service from what I've read with O3.. Plus their hot sides are mild steel. CX are all stainless, back purge welded.

I've been sitting on the TT kit for about a year now, getting all my part together. I took pics of it if you all are interested. CXRACING Slideshow by leadfootdriver | Photobucket

I went ahead and bought different Wastegates tho. These are way better and are still affordable.


38MM 4 PSI External Turbo Stainless Steel MINI Wastegate Dump Valve Black | eBay

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post #11 of 29 Old 01-05-2017, 07:02 PM Thread Starter
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Nice pictures kit looks real nice i dont see that they have one for 94 95s. Thank you for the pictures.
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post #12 of 29 Old 01-05-2017, 07:57 PM
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I like that the CX Turbos are water cooled. I'm definitely going to run it that way.
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post #13 of 29 Old 01-06-2017, 08:43 PM Thread Starter
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Seems like a great kit.
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post #14 of 29 Old 01-08-2017, 07:22 AM
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My on3 76mm .94a/r wouldn't spool up until almost 4k. The on3 70mm .68 made full boost by 2,200 rpm.
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post #15 of 29 Old 01-08-2017, 01:49 PM
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Got twin on3 70's on my 357. Go with the 70mm.

Two turbos and a carb...
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post #16 of 29 Old 01-08-2017, 09:09 PM Thread Starter
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Thanks guys for the input any other suggestions ?
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post #17 of 29 Old 01-08-2017, 09:57 PM
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Check the hotside for burrs and debris, really get in there and look, then wash everything. Small debris in your hotside can wipe out your turbo! Ask me how I know.
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post #18 of 29 Old 01-10-2017, 08:05 AM Thread Starter
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Thanks.I had read that before but a good reminder.
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post #19 of 29 Old 01-14-2017, 12:50 PM
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Doing a on3 on a 95 gt with a 78/76 let me know how yours goes
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post #20 of 29 Old 01-15-2017, 09:43 AM Thread Starter
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I will doing the 70 mm.car has tfs top end kit and f303 can and 1.6 rockers.So since its mostly street im going for quick boost i decided. Keep us updated on yours as well.
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post #21 of 29 Old 01-17-2017, 11:09 AM
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are you doing anything with the abs unit
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post #22 of 29 Old 01-17-2017, 11:38 AM Thread Starter
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Well since with on 3 kit says you can sneak the intercooler piping through the ABS area so if I had an extra power last thing I want to do is mess with the brakes. That'll be my next Winter's project.How about you?
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post #23 of 29 Old 01-17-2017, 05:47 PM
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i out a upr k member in and set the engine back to gain some room but looks really tight in there also may cut the front off and do a tube kit to get rid of some weight
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post #24 of 29 Old 01-17-2017, 06:23 PM Thread Starter
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I think a lot of problems with the Turbo fitment Kits no matter who you buy it from is has the car been in a wreck and what kind of motor mounts do you have.
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post #25 of 29 Old 01-26-2017, 03:26 AM
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Last time I checked the on3 kits were stainless. If someone wants to pay 2-3x the price for something else that's their decision, but on3 kits work, even if something needs tweaked your still going to make the same power for way less. To each their own.
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post #26 of 29 Old 02-01-2017, 09:47 AM
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had to move the motor back to stock location 1inch back wont clear the strut tower with down pipe also i have to change the cross over pipe due to my oil pan where i think a stock pan it would have been fine
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post #27 of 29 Old 02-01-2017, 10:01 AM
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My on3 kit fit perfect on my stock motor/mounts. I did a k-member that moved the engine 1" back and used mounts that dropped it an inch, which made the downpipe hit the firewall and front header hit the motor mount pad of the k-member. just had to grind on the pad and manhandle the downpipe and all fits okay again.
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post #28 of 29 Old 02-20-2017, 10:29 AM
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got mine running had to change the cross over pipe to clear my oil pan so i could still use the drain plug big moroso pan and engine in stock location poly engine mounts cleared some frame area by turbo to make get to the bolts cut area to clear inlet pipe also
added 2 45deg silicon couplers outlet of turbo and at throttle body made it easier to install
now tuning it hopefully get some numbers on it by summer
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post #29 of 29 Old 02-22-2017, 08:56 AM
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Quote:
Originally Posted by allenpeake View Post
got mine running had to change the cross over pipe to clear my oil pan so i could still use the drain plug big moroso pan and engine in stock location poly engine mounts cleared some frame area by turbo to make get to the bolts cut area to clear inlet pipe also
added 2 45deg silicon couplers outlet of turbo and at throttle body made it easier to install
now tuning it hopefully get some numbers on it by summer
any pics Allen?

Here's mine with the Magnum 72mm
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