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pte 6262 on stock motor??

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codeofdastreets

15+ Year Contributor
505
3
Sep 25, 2008
dunedin, Florida
Hey I need help on the computer nd fuel system choice. I have a stock 6 bolt short block wit balance shaft removed,mls head gasket, nd arp head studs. The head is stock wit supertech dual spring nd retaniers, nd I beleve a fp2 cam.. Now I have a pte 6262 t3 journal bearing turbo I picked up for a really good price.. As of now I have a eprom chipped for 750 cc injectors, maf trans/ 3in gm maf, safc.. I know a safc is only good to 750 cc injectors also so it is maxed out... Now I wanna know what I can doo:confused: Can I run low boost on this setup??? Do bigger injectorss for low boost for a turbo that size??? I'm not looking to pass 500 wheel since it is a stock short block... But this car needs to be put together for now.. What could I doo for this setup to make around 425-450 wheel for now..:confused::confused: thanks
 
If you're ecu already has a custom eprom for the 750cc injectors, then it makes the safc pretty useful. You can use it with a wideband to make small adjustments to get your a/fs in check. It only becomes a problem if your ecu still thinks you're running stock injectors because, then its out of its compensation range with 750cc and timing will be excessively high, especially on 1g.
You could also learn how to burn your own eproms as well to adjust timing and fuel and a bunch of other stuff with Tunerpro and a chip burner.
If your car is tuned well, you should be able to make some good power on the stock shortblock, but I don't see your spool being too great
 
As of now I have a eprom chipped for 750 cc injectors, maf trans/ 3in gm maf, safc.. I know a safc is only good to 750 cc injectors also so it is maxed out...
Not when your EPROM is already compensating for 750's....if you try running bigger injectors at that point 750's will become 450's again, and you start all over with dialing in larger injectors. You can use the Translator for additional compensation, but I don't recommend piggybacking too many tuning devices in the event that one fails you'll have a tough time tracking down your problem.

Can I run low boost on this setup???
Now why the hell would you want to do that? If you don't have the proper setup to push that turbo at least somewhat into it's efficiency range, don't bother bolting it on the car.


Do bigger injectorss for low boost for a turbo that size???
Say what now?


I'm not looking to pass 500 wheel since it is a stock short block...
That's good because you're probably not going to get there too easily.


...but this car needs to be put together for now.. What could I doo for this setup to make around 425-450 wheel for now..
Put the 6262 on the shelf and buy a turbo that would be more useful with the fuel system mods you currently have. Don't half-ass anything with your build just to get the car on the road or you'll regret it later.
 
i put hx40 on internally stock low milage motor and broke the ring lands off number 1 and 3 pistons. i had a full set off bolt ons. all suporting mods. 255lph, 780s, 3"fmic, 3"tbe, dejon tool intake manni, nice turbo header, all the gauges everything. broke my pistons tho. i dont know man i might of got greedy with the boost is why but its hard to say. my six bolt was a low milage jdm same 7.8-1 pistons as you. and they broke from the big holset. im sure your motor is higher milage right? its kinda a gamble. i think you could put it on there but its so damn tempting to mess with the boost. you get greedy and you want more. if your conservitive i think you could pull it off. some might say the 7.8 pistons dont make enough cylinder pressure to effectivley spool that thing. thats all i heard when i was puutin the hx40 on my stock set up. thats all BS. it'll spool. the lag wont even bother you, trust me. youll here it spoolin like a semi truck and then WAM! that sudden burst of power is to die for. i say go for it. and when you blow your pistons, then youll have reason and excusse to justify the expense of buyin those expensive forged 8.5 slugs with h-beam rods. good luck!
 
i put hx40 on internally stock low milage motor and broke the ring lands off number 1 and 3 pistons. i had a full set off bolt ons. all suporting mods. 255lph, 780s, 3"fmic, 3"tbe, dejon tool intake manni, nice turbo header, all the gauges everything. broke my pistons tho. i dont know man i might of got greedy with the boost is why but its hard to say. my six bolt was a low milage jdm same 7.8-1 pistons as you. and they broke from the big holset. im sure your motor is higher milage right? its kinda a gamble. i think you could put it on there but its so damn tempting to mess with the boost. you get greedy and you want more. if your conservitive i think you could pull it off. some might say the 7.8 pistons dont make enough cylinder pressure to effectivley spool that thing. thats all i heard when i was puutin the hx40 on my stock set up. thats all BS. it'll spool. the lag wont even bother you, trust me. youll here it spoolin like a semi truck and then WAM! that sudden burst of power is to die for. i say go for it. and when you blow your pistons, then youll have reason and excusse to justify the expense of buyin those expensive forged 8.5 slugs with h-beam rods. good luck!


I agree 100%. If your not breaking parts your not making enough power. Besides, lots of people have tested the limits of the stock short block without issues. As a matter of fact, the list of 10 second stock block cars seems to be growing by the day. Go for it bro. Let us know how it goes.
 
some might say the 7.8 pistons dont make enough cylinder pressure to effectivley spool that thing. thats all i heard when i was puutin the hx40 on my stock set up. thats all BS. it'll spool. the lag wont even bother you, trust me. youll here it spoolin like a semi truck and then WAM! that sudden burst of power is to die for.
It's not the compression that matters, it's the durability of the internals. You've apparently experienced this yourself. A 7.8:1 motor will spool whatever you bolt on the exhaust manifold....it just may take a little longer than a built engine with 9.0:1+ compression.

Big turbo + Stock Motor with low compression = about 2000 RPMs of useable power.

Who wants a turbo that your engine has a tough time spooling to have your engine run out of steam before the turbo even reaches it's peak airflow? What a complete waste of money....guys with 16G's and a good tune would run all over you because their powerband stretches from 3.5k to redline instead of 5k to redline; they won't have to worry about dropping out of boost after each shift.


Bolting a 65+lb/min turbo to a stock engine doesn't make the engine fast. By the time you up the boost to the point where the turbo is useful, you'll be breaking parts; if you're not running the turbo at a boost level where it's moving air, you might as well be using a smaller turbo so you can have the benefit of quicker spool on your side.


the list of 10 second stock block cars seems to be growing by the day. Go for it bro. Let us know how it goes.
Most of these are cars that cannot be reliably driven as a daily driver, and some of these cars are using turbos as small as an Evo III 16G to get it done. It's not the turbo that's getting them to the 10's.
 
A wise choice. PTE's reliability leaves a lot to be desired, while the ball-bearing platform the 3065 is designed around is tough as nails.

Feed the 3065 from the head with a .030" restrictor in the feed line, or use FP's inline filter which is already restricted to the proper size for a ball bearing turbo.
 
Justin I couldn't find where to buy that turbo. I was actually trying to find out the price of it and its flow rate. It seems to be a bad ass turbo for what it is.
 
Justin I couldn't find where to buy that turbo. I was actually trying to find out the price of it and its flow rate. It seems to be a bad ass turbo for what it is.

The 3065?

Forced Performance / DSM FP3065 Turbocharger

FP doesn't like to give away secrets about their wheel combinations, but the 3065 basically combines the quick-spooling GT30R with the airflow characteristics of a GT35R.
 
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