Fox On3 Turbo 88 Mustang

88five-oh · Dec 31, 2013

I have been building my first turbo budget car for a couple of months now . I can say i am pretty impress with the fitment of the kit from On3Peformance so far. I am new to this turbo world. The Car is a 88 mustang gt with 95 cobra engine, it has Trick flow track heat intake, Comp cam, 215 Roush Heads, Stock T5, P-MAS, 60 lb Deka injectors, 340 Aeromotive in-tank fuel pump with a standard 70mm on3turbo kit. I'm almost done with my build and i would like some input on a couple of things. 1) what type of spark plugs to install and what gap should I use? 2)What type of Gears should I install 3.27? 3.55s? 3)from where do I Install my BOV and waste-gate vacuum lines ? Finally, has anyone heard of the Roush Heads i have ? I got them on eBay for 500 bucks but I have never heard of them or seen them other than the crate engines sold on the Roush website Thanks. Here are some pictures of my car:

Grabbin' Asphalt · Dec 31, 2013

Cool man, wanna see how the On3 turbo works out for you

88five-oh · Dec 31, 2013

Grabbin' Asphalt said:
Cool man, wanna see how the On3 turbo works out for you

Thanks man , I am pretty anxious to just turn it on.

RangerJoe · Dec 31, 2013

Post some more pics of the heads. Did you buy them assembled? $500 is a steal. What ebay member did you get them from? I bought a set recently. They are supposed to be Roush branded RHS heads. I have found a few cracks near the guide area and I am trying to get Roush to work with me on it. They are supposed to be decent heads. Pm me if you like, I would be curious to know if we got them from the same person.

Joe

MY 85 GT · Jan 1, 2014

I would start at either .o32 to .o28 on the plugs...You can use Autolites just one step colder...I would go with 3.27s Turbos don't need big gears....the BOV vac line I cant answer I had a shop install mine so I don't know were it is....I never heard of those heads so I cant answer that one either...

NIKwoaC · Jan 1, 2014

LOL @ the upside down intercooler logo!

Should be a really fun ride when you're done. Good to hear a positive review on an On3 kit install.

RacEoHolic330 · Jan 1, 2014

Looking great so far.

For the wastegate, if the compressor outlet of your turbo has an area to tap for an NPT nipple, that would be the best place to tap for your lines for the most responsive boost control. The closer to the turbo the better. No vacuum source is necessary.

The BOV needs a boost/vacuum source, so tapping any vacuum line off the manifold will be fine.

mikestang63 · Jan 1, 2014

Looks like that thing is going to scream. Not to derail the thread, but did you make that instrument panel or buy it.

84Ttop · Jan 2, 2014

Looks like a nice project you have going. The only heads i've seen come directly from roush are the RHY45 heads or the D3 castings never an inline valve head so i'm curious about whether they are rebranded or not. As far as the bov and waste gate these both need to see manifold vacuum/boost and a port from your upper intake manifold should be fine for that. The vacuum will open you Bov and the boost will keep your waste gate closed working in conjunction with whichever springs you have installed. Are you running any type of boost controller?

elarm1 · Jan 2, 2014

Where'd you get the Maf and Injectors?

krazedstang · Jan 2, 2014

I am really interested to see how this goes, I plan on installing an On3 kit on my 88 Vert within the next year or two

madspeed · Jan 2, 2014

Looks vagely familiar

madspeed · Jan 2, 2014

For the wastegate, I drilled and tapped the turbine housing and mounted a manual boost controller teed in right below it on the inside frame rail.

88five-oh · Jan 2, 2014

RangerJoe said:
Post some more pics of the heads. Did you buy them assembled? $500 is a steal. What ebay member did you get them from? I bought a set recently. They are supposed to be Roush branded RHS heads. I have found a few cracks near the guide area and I am trying to get Roush to work with me on it. They are supposed to be decent heads. Pm me if you like, I would be curious to know if we got them from the same person.

Joe

I will Post some more pics a soon as I get back home. I bought the heads like 5 months ago I dont remember the Ebay member ill see if i can look up for the recipe and ill send you that info. The heads were assembled and i was lucky that I was the only bidder. Thanks

88five-oh · Jan 2, 2014

mikestang63 said:
Looks like that thing is going to scream. Not to derail the thread, but did you make that instrument panel or buy it.

I sure hope so . I got the Cluster from some guy at ebay for 35 bucks it really does not look that difficult to reproduce .

88five-oh · Jan 2, 2014

madspeed said:
Looks vagely familiar

Nice how is the kit holding on?

88five-oh · Jan 2, 2014

krazedstang said:
I am really interested to see how this goes, I plan on installing an On3 kit on my 88 Vert within the next year or two

The Kit fit pretty good, So far so good.

88five-oh · Jan 2, 2014

elarm1 said:
Where'd you get the Maf and Injectors?

The MAF I bought it from On3 and the injectors i got them from a friend of mine.

88five-oh · Jan 2, 2014

RacEoHolic330 said:
Looking great so far.

For the wastegate, if the compressor outlet of your turbo has an area to tap for an NPT nipple, that would be the best place to tap for your lines for the most responsive boost control. The closer to the turbo the better. No vacuum source is necessary.

The BOV needs a boost/vacuum source, so tapping any vacuum line off the manifold will be fine.

Thanks for the info.

88five-oh · Jan 2, 2014

84Ttop said:
Looks like a nice project you have going. The only heads i've seen come directly from roush are the RHY45 heads or the D3 castings never an inline valve head so i'm curious about whether they are rebranded or not. As far as the bov and waste gate these both need to see manifold vacuum/boost and a port from your upper intake manifold should be fine for that. The vacuum will open you Bov and the boost will keep your waste gate closed working in conjunction with whichever springs you have installed. Are you running any type of boost controller?

I am thinking of investing in a boost controller they are kinda pricey though jaja

Fox On3 Turbo 88 Mustang

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