Jump to content
SAU Community

Recommended Posts

holy short gearing!

Not really, that would be 1:1 (4th gear) on a 4.1-4.3 diff.

Youve been looking at GTR graphs too much zeeb lol.

And yes, thats a nice result. Good to see them making respectable power at decent boost levels.

  • 2 weeks later...

fair enough...but a random YouTube vid with a vague description doesn't prove anything...for all we know the car has a 100 shot of gas.

I don't mean to sound cynical but for every good Precision result there seems to be a bad one too.

I dont doubt they are a good turbo...but they are no better than Garrett/BW/MHI etc

they all have good and bad points, But I really hate people jumping up and down about how good X brand turbo is.

Well good news Zebra, I happened to be there that day for a HPI shoot and guess what, there was no gas. Well actually there could have been, but I didn't check under the dash for a sneaky Pete bottle...

It was pointed out earlier that they don't seem to make power on "reasonable" boost levels so I demonstrated a couple of cases that show the opposite. No jumping up and down here.

The precisions will want a lot of boost and you are risking your factory motor in the event of a minor fauxpas. For 400kw you will want to look at a 3788R, it is the replacement for 35Rish spool and more than T04Z power. You must run it in its twin scroll form.

ha,

my old man's 32 GTR is making 500hp @ the wheels on a measly 19psi with a stock bottem end and straight 98 from the bowser on a precision 6262. and this was done with the biggest heap of shit exhaust maniold which is a hks low mount cast log style. sick of seeing people whinge about how these turbos need like 40psi to make power and just by reading reviews from other people saying they are shit becuase they probley dont have the correct supporting mods to reap the full bennifit of the turbo.

^ A lot of people don't seem to understand that often when dyno results rely on lots of boost to make numbers its often the engine/boltons combination which isn't up to it, as opposed to the turbo itself... though the element of truth to the likes of PT6262s "needing lots of boost" is that they do come into their own at really high boost levels, naturally using a decent fuel to help the engine stay happy at those boost levels.

Hypothetically speaking, if a GT35R could hit 450kw on E85 and a PT6262 hit 500kw on the same engine with E85 - both on 2+bar of boost, wouldn't mean that if you ran both turbos on pump gas using 20psi you'd make 10+% more power with the PT6262.... more likely you'd make about the same.

ha,

my old man's 32 GTR is making 500hp @ the wheels on a measly 19psi with a stock bottem end and straight 98 from the bowser on a precision 6262. and this was done with the biggest heap of shit exhaust maniold which is a hks low mount cast log style. sick of seeing people whinge about how these turbos need like 40psi to make power and just by reading reviews from other people saying they are shit becuase they probley dont have the correct supporting mods to reap the full bennifit of the turbo.

Mind = Blown

Yes lithium, correct. But at the end of the day wouldent you rather a turbo that has the "same performance" as a 35r on mild boost and pump fuel, but if you ever wanted to switch over to e85 and crank some in it that it's ready to make numbers, not having to change to a larger turbo setup.

Exhibit A- the guy who was disappointed about his 5557 result and all you guys saying it was a shit result and a bad turbo for pump fuel, and it ended up him having a collapsed muffer. Hahahahh made me laugh how you's are quick to point the finger.

Anyway your loss is my gain. We are all more then happy with the turbos.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • What does it look like with highway driving? And yes, I had a similar thought as Duncan. It looks quite similar in my Stagea and I have made myself accept it as normal. Might have to look into it some day  
    • While I was waiting for the new parts to come in for the charge pipe and radiator I decided to do some turbo modification. The drive pressure (exhaust backpressure) was a lot higher that I thought it should be. For 32lbs of boost drive was 55lbs. The turbine housing is a 1.10AR and my turbo builder has suggested to go to a 1.25AR. To test if a larger AR would do anything to reduce drive pressure AND not spend any money I decided to hog out the divider in my current housing. I removed it from the inlet and the whole way through the housing.  After reassembly and testing it doesn't look like this modification did anything for reducing drive pressure or requiring more fuel (making more power). Oh well, it was worth a shot. We'll get some data at the track if it makes it past the 60ft. I also machined a $7 shift knob off Amazon to fit my Stillway shifter since I didn't like the Stillway shift knob. Next on the list was the radiator replacement and fabrication of a new intercooler tube that had no silicon coupler. No pictures of this - I was short on time each night after work to get this done and didn't stop to take pictures.  Next was to get the clutch disks out and replaced. Previously when installing the dogbox I had ordered a set of the same sintered iron disks I had been running because I switched to the 26-spline input shaft. I thought it was odd that they didn't have any markings or brand name on them like all my old disks had but installed them anyway. At the track I could not get the clutch to lock up using my normal strategies. After two track nights I reached out to the clutch manufacturer and ask their thoughts. They said they had to switch the material out because they were having trouble getting the original material and that this new material would not take to being slipped very well.  So out with the first set of 26-spline disks and in with the correct material 26-spline disks. While I had the trans out I added an inspection/service hole. I've wanted one of these for a while. Now I can have a look at things and change the front cover shimming when needed (clutch wear). I hustled and got the clutch change done in a few hours on a Saturday. Hopped in the car and drove home. On the way home I did a 1-3 pull. When shifting from 2nd to 3rd the core plug in the back of the cylinder head popped out and dumped all the coolant. Thankfully I was only 30 seconds from home and coasted it there. Datalog showed nothing unusual and 2.5psi of coolant pressure. That plug has been in there since 1992 but I guess it worked its way out. Pulled the trans AGAIN and replaced the plug, JB welded it in, and made a brace. Also deleted the head drain I had added in during the bearing issue fiasco.  I am currently changing my boost control plumbing to make it cleaner. After that is done I'll make another attempt at getting past the 60.
    • Are you 100% sure this isn't tune related?
    • 140-150 across the board. At this point hoping the grounding harness fixes it. My grounds are all tied to the chassis and none to the battery. For SR and KA that’s never been a problem for me but had a few other guys here and Reddit who told me RB really like a very solid ground setup tied to the battery so going to try that next, I’m stumped if that doesn’t do it. Never had a car have spark and fuel and not fire off before. Only thing I can think is the spark is intermittent/weak because of grounds nothing else really makes sense at this point 
    • I am having close to the same issue. Can you help me with what wire you grounded to get your pump to trigger?
×
×
  • Create New...