Twin T70's or a single PT88/GT88???
12-29-2009, 07:31 AM
#1
Twin T70's or a single PT88/GT88??? Specs on my engine in my sig. It's finally getting finished off at the machine shop, so now it's time to decide. I like the idea of a single since I won't have to move my battery to the trunk. The downside is it will be more fab work to get done vs using the C6 manifolds for twins. So given a choice for making 750rwhp through a TH400, what would you guys do?
Last edited by TurboAv; 12-30-2009 at 04:01 PM.
12-29-2009, 09:34 AM
#2
Specs on my engine in my sig. It's finally getting finished off at the machine shop, so now it's time to decide. I like the idea of a single since I won't have to move my battery to the trunk. The downside is it will be more fab work to get done vs using the C6 manifolds for twins. So given a choice for making 750rwhp through a TH400, what would you guys do?
PS: If I do go single should I use one JGS 50mm wastegate on each bank or just use one? I already have two is why I ask.
PS: If I do go single should I use one JGS 50mm wastegate on each bank or just use one? I already have two is why I ask.
12-29-2009, 10:15 AM
#3
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Specs on my engine in my sig. It's finally getting finished off at the machine shop, so now it's time to decide. I like the idea of a single since I won't have to move my battery to the trunk. The downside is it will be more fab work to get done vs using the C6 manifolds for twins. So given a choice for making 750rwhp through a TH400, what would you guys do?
PS: If I do go single should I use one JGS 50mm wastegate on each bank or just use one? I already have two is why I ask.
PS: If I do go single should I use one JGS 50mm wastegate on each bank or just use one? I already have two is why I ask.
plz build now, lol, Subscribed as i too am contemplating the single vs twin on my gto.
12-29-2009, 11:54 AM
#4
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I run twin 70s on a stock bottom end 6.0 with a cam,ported stock heads and a ls6 intake with ported stock tb and make right around 800 whp on 14psi.
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12-29-2009, 12:22 PM
#9
That's encouraging. What RPM is you setup spooled up at? What cam? If .68 won't cut it I can try .81's I guess. .96 seems to large. I wish the MPT70's were offered with the .81 housings. Only having the .68 and .96 really has me contemplating going with twin Turbonetics if I have to spend $500 on new housings I'm almost at the cost of twin Turbonetics with .81 housings.
12-29-2009, 12:30 PM
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That's encouraging. What RPM is you setup spooled up at? What cam? If .68 won't cut it I can try .81's I guess. .96 seems to large. I wish the MPT70's were offered with the .81 housings. Only having the .68 and .96 really has me contemplating going with twin Turbonetics if I have to spend $500 on new housings I'm almost at the cost of twin Turbonetics with .81 housings.
12-30-2009, 10:06 AM
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I'm guessing it's a street car? Whatever your budget allows, but it seems a single 88mm will give you more than enough power. I think that is what Mightymouse is/was running. That was good for 8sec. passes in street trim.
I'm finishing up on a twin 76mm build so I only have my experience on the build process. Twice the plumbing obviously and not alot of room= alot of cutting and relocating. If I had it to do over again I would have stuck with an 88 or 91mm single turbo instead. just my $.02
I'm finishing up on a twin 76mm build so I only have my experience on the build process. Twice the plumbing obviously and not alot of room= alot of cutting and relocating. If I had it to do over again I would have stuck with an 88 or 91mm single turbo instead. just my $.02
12-30-2009, 03:35 PM
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I'm sure that wouldn't be a problem at all. Though you can probably get a GT88 from forced inductions for roughly the same price. It's always nice to have more power than you would need on tap.
12-31-2009, 12:29 AM
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Jon, your goal should be to create enough power to keep our Class 1E PK "A" channels in each unit secure in case if the battery charger and the swing charger go dead!