The ULTIMATE Turbo Q&A Thread!
11-03-08, 11:26 AM
#18
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I like this thread Jeff since I'm gathering my parts for my turbo setup very good info. I wonder why we can't have a sub forum for turbos ,swaps. and nitrous for all lexus cars ? We got drift ,dub ,and vip sub forums lets have a go fast and a go faster section similiar to MY is.com has but for all lexus models
Last edited by smuv gs3; 11-03-08 at 11:30 AM.
11-03-08, 04:40 PM
#19
I am planning on doing a 2jz-gte swap as my motor has around 200000 miles on it. Do you know exactly what wires i would need to keep and or extend for the motor swap. Is it as simply as a plug and play operation .How much power will the aristo ecu with AEM FIC take before i have to go standalone
just checking..but you did mean 30% at 7psi and not 9 right? and if that is true that would be about 4.3 fuel per lb of boost (all things being equal) and about 38%-40% at 9psi? that sound right? (two diff ppl have told me 11.5 at full throttle at 9psi...what do you think of that estimate?
Thanks
Thanks
11-03-08, 05:01 PM
#21
RC Engineering and Precision are the two I stick with. They aren't the cheapest but they are the most accurate and reliable. There are other brands that cost less, but inaccurate fuel is not something you want to play with at 500+hp. You can usually find a set of used injectors for decently cheap...around $200-400 range. I bought my Precision 1000cc injectors used for $300 or so I think.
You can also use OEM injectors like the popular 550cc Densos from the RX7 which are a direct drop in for the stock GS300 2JZ-GE motor. Just make sure they're still good before you drop it in your car.
Just one thing to be careful when you buy used injectors is that they are still in good shape. If the injector is really old then it will either leak or even worse and have clogged nozzles. You can send old injectors off to get rebuilt. They can repair old leaky and clogged injectors to like brand new. Injectors technically never wear out, they just get dirty and once cleaned they will work like new again. Once you get it back from the injector service they will give you a flowchart with numbers or graphs showing you how much each injector flows. Ideally you want all the injectors to be within a few percent of each other.
This is the other reason why people tune for 11.5:1 AFR. It's technically on the rich side and the engine should be able to run fine at 12:0 or 12.5:1. They run it rich just to have some safety margin. Say for example one injector puts out less fuel than the others. By running everything a little richer, you have less of a chance of blowing out/melting that one cylinder.
You can also use OEM injectors like the popular 550cc Densos from the RX7 which are a direct drop in for the stock GS300 2JZ-GE motor. Just make sure they're still good before you drop it in your car.
Just one thing to be careful when you buy used injectors is that they are still in good shape. If the injector is really old then it will either leak or even worse and have clogged nozzles. You can send old injectors off to get rebuilt. They can repair old leaky and clogged injectors to like brand new. Injectors technically never wear out, they just get dirty and once cleaned they will work like new again. Once you get it back from the injector service they will give you a flowchart with numbers or graphs showing you how much each injector flows. Ideally you want all the injectors to be within a few percent of each other.
This is the other reason why people tune for 11.5:1 AFR. It's technically on the rich side and the engine should be able to run fine at 12:0 or 12.5:1. They run it rich just to have some safety margin. Say for example one injector puts out less fuel than the others. By running everything a little richer, you have less of a chance of blowing out/melting that one cylinder.
11-03-08, 05:40 PM
#22
I'm half tempted to buy all the parts seperately but I just need to get a source(s), do you think I could a get a parts list by looking at whats included with the srt kit and use that as a list?
and it says Turbo, I didn't know it was for swaps too.
11-03-08, 06:57 PM
#24
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how does the 02 skew thing work on the AEM F/IC? Does it effectively disable the o2 sensors? in other words...could i get rid of a couple of the 02 sensors without there being any problems?
11-04-08, 10:29 PM
#26
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i guess this is more of a general turbo set up question
i've been looking into manifolds it seems a lot of the cheaper 2jz manifolds are internal gate, i've never thought internal gate is the way to go.
Are there any major pros/cons in the internal vs external wastegate set ups?
i've been looking into manifolds it seems a lot of the cheaper 2jz manifolds are internal gate, i've never thought internal gate is the way to go.
Are there any major pros/cons in the internal vs external wastegate set ups?
11-04-08, 10:44 PM
#27
no, they're sidefeed injectors. get yourself 550cc denso from rx-7 FDs. the ones from SARD is ok but not as nice as the denso ones.
you could get rid of the sensor 2's and splice sensor 1's together to just one o2 sensor. however you have to worry about the heater circuit. most likely you will have a CEL. Don't even bother with the o2 skew until you have MAF and fuel table tuned correctly. I did a write up on clubna-t.com you should look there.
Single walbro is not hard to install at all. Dual is a bit challenging with the stock hanger. Powerhouse racing sells an Al bracket that can hold either 3 walbros or 2 denso's. Another route is to get a fuel cell and run a bosch 044.
Single walbro is not hard to install at all. Dual is a bit challenging with the stock hanger. Powerhouse racing sells an Al bracket that can hold either 3 walbros or 2 denso's. Another route is to get a fuel cell and run a bosch 044.
Last edited by ElitistK; 11-04-08 at 10:48 PM.
11-04-08, 10:52 PM
#28
i guess this is more of a general turbo set up question
i've been looking into manifolds it seems a lot of the cheaper 2jz manifolds are internal gate, i've never thought internal gate is the way to go.
Are there any major pros/cons in the internal vs external wastegate set ups?
i've been looking into manifolds it seems a lot of the cheaper 2jz manifolds are internal gate, i've never thought internal gate is the way to go.
Are there any major pros/cons in the internal vs external wastegate set ups?
recirculated dump is much better than open dump (at the cost of like 1-2 hp?). even though you might crave the sound of open dump, trust me you'll get tired of it.
Last edited by ElitistK; 11-04-08 at 10:56 PM.
11-05-08, 12:53 PM
#30
Jriggs, pretty much any aftermarket manifold has external gate. I have not see one yet that is internally gated. Please show me one. External gate will yield more power and more accurate boost control.