GS460 Direct Injection
#1
Driver School Candidate
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GS460 Direct Injection
Just to confirm - the GS460 does not have direct injection?
Why do you think they left it out? Any reason other than cost?
Does it really matter?
Are there any advantages to not having direct injection (engine life etc)?
Why do you think they left it out? Any reason other than cost?
Does it really matter?
Are there any advantages to not having direct injection (engine life etc)?
#3
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Check this article:
http://carsguide.news.com.au/site/mo...he_other_chic/
maybe it doesn't have the same direct injection as the LS?
or are Australian cars different than the NA version?
the hp is the same as the NA version anyway...
http://carsguide.news.com.au/site/mo...he_other_chic/
maybe it doesn't have the same direct injection as the LS?
or are Australian cars different than the NA version?
the hp is the same as the NA version anyway...
#5
Lexus Fanatic
why does the direct injection have to be so noisy? Generally they say 20%more power and 20% more efficency, but at the cost of ticking sounds at idle
#7
Lexus Test Driver
Its not just the direct injection engines, there are many Toyota owners with the 3.5 V6 engine that has the ticking noise too. Many owners are pointing to the lifter.
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#8
Yes. I drove the LFA.
iTrader: (9)
Direct injection is loud because the injectors are functioning at pressures of in excesss of 1000 psi, while port fuel injectors function at pressures around 50 psi. Basically, the direct injectors have to open and close with brute force because of the pressure, and the fact that they are firing into an active combusion chamber. Its not only the injectors that you're hearing, but also the fuel pump mounted on the valve cover as well.
#11
Lexus Test Driver
I wondering if it has to do with the Engine more than sound insulation. The RAV4 V6, RX350 have basically the same V6 engine minus the direct injection. You go to either one of these forum and you will find a number of threads about engine ticking.
#15
Updated engine spec info
Hey all,
Now I have been seeing tons of mixed information floating around numerous threads pertaining to whether or not the GS460 has direct injection. Considering this thread's title, I figued this would be the best one to post the information I found.
My brother is a Lexus tech and he pulled up a service bulletin for motor identification and it proves that the GS460 DOES have direct injection. As you can see in the picture below, the 1UR-FSE motor is being used.
I think there may have been alot of confusion with people mistaking the GX460 as it does have the 1UR-FE which isn't DI. Hope this clears things up for those of you that have the 460 as I know it did me. I am going to update the wiki sites as they are showing wrong as well.
-D
Now I have been seeing tons of mixed information floating around numerous threads pertaining to whether or not the GS460 has direct injection. Considering this thread's title, I figued this would be the best one to post the information I found.
My brother is a Lexus tech and he pulled up a service bulletin for motor identification and it proves that the GS460 DOES have direct injection. As you can see in the picture below, the 1UR-FSE motor is being used.
I think there may have been alot of confusion with people mistaking the GX460 as it does have the 1UR-FE which isn't DI. Hope this clears things up for those of you that have the 460 as I know it did me. I am going to update the wiki sites as they are showing wrong as well.
-D