View Poll Results: What engine do you think Lexus should have opted for?
5.0L
27
79.41%
5.7L
7
20.59%
Voters: 34. You may not vote on this poll
5.0L V8 versus 5.7L iForce V8
04-24-09, 05:21 AM
#1
Lexus Champion
Thread Starter
5.0L V8 versus 5.7L iForce V8
While driving this morning I was thinking, Lexus could have inserted the 5.7L iForce V8 off the Toyota Tundra. Would have the .7L in displacement made a difference in power and economy? Would there have been fitment issues? Would it have been a Lexus versus Toyota motor issue? What are your thoughts? Thanks for your opinions.
1. 5.0L
2. 5.7L
1. 5.0L
2. 5.7L
04-24-09, 05:51 AM
#3
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04-24-09, 07:58 AM
#4
Lexus Champion
Thread Starter
04-24-09, 08:45 AM
#5
Lexus Connoisseur
The 5.7L (3UR-FE) in the Tundra is in the same UR engine block family as the 5.0L (2UR-GSE) in the IS-F and the 4.6L (1UR-FSE) in the LS/GS. The heads are obviously different for each application.
04-24-09, 08:59 AM
#7
i don't think it's possible. cylinder walls will get too thin and eventually the engine blows. almost all displacement increasing kits on the market is a stroker kit.
the 5.7 has a smaller bore but a much longer stroke compared to the 5.0. this is ideal for torque but not rpm's.
the 5.7 has a smaller bore but a much longer stroke compared to the 5.0. this is ideal for torque but not rpm's.
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04-24-09, 09:00 AM
#8
why not use a longer stroke than boring out the motor. That is probably what the difference in the motors are since they have different heads but the same block. I dont think that your going to get that much more horsepower but definitely more torque.
04-24-09, 10:55 AM
#9
i don't think it's possible. cylinder walls will get too thin and eventually the engine blows. almost all displacement increasing kits on the market is a stroker kit.
the 5.7 has a smaller bore but a much longer stroke compared to the 5.0. this is ideal for torque but not rpm's.
the 5.7 has a smaller bore but a much longer stroke compared to the 5.0. this is ideal for torque but not rpm's.
Javier
04-24-09, 11:54 AM
#10
Lexus Champion
Thread Starter
04-24-09, 02:13 PM
#12
Lexus Fanatic
iTrader: (10)
Join Date: Nov 2004
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In case you guys or gals missed my threads/posts...
Please Click on below Thumbnails to view Videos..
SEMA 2008 is over, but we brought home a little something to share with Club Lexus & my.IS members. 
An in-depth Interview with Troy Sumitomo of Five Axis Design..
The main article was released this weekend on the my.IS homepage.
Also, now on the Club Lexus Homepage.
Given YouTube's time limitations, the interview appears in two parts.
Click on the Video Thumbnails below to view Part One and Part Two of our 17½-minute interview with Troy Sumitomo.
So make a bag of popcorn, sit back and enjoy these videos..
Part 1
Part 2
Thank You & Enjoy!!!
Joe Z
An in-depth Interview with Troy Sumitomo of Five Axis Design..
The main article was released this weekend on the my.IS homepage.
Also, now on the Club Lexus Homepage.
Given YouTube's time limitations, the interview appears in two parts.
Click on the Video Thumbnails below to view Part One and Part Two of our 17½-minute interview with Troy Sumitomo.
So make a bag of popcorn, sit back and enjoy these videos..
Part 1
Part 2
Thank You & Enjoy!!!
Joe Z
Originally Posted by Joe Z
Hey Gang!!
Here is a little something I put together for you all...
It's a Sneak Peak of the Stage 2 N/A Engine Modifications to the Five Axis Design Project IS-F.
*** There will be an upcoming FULL Video Interview with Troy Sumitomo of Five Axis. ***
Coming soon...!!
These Videos were shot on location in Las Vegas - SEMA 2008
Enjoy
- Joe Z
Here is a little something I put together for you all...
It's a Sneak Peak of the Stage 2 N/A Engine Modifications to the Five Axis Design Project IS-F.
*** There will be an upcoming FULL Video Interview with Troy Sumitomo of Five Axis. ***
Coming soon...!!
These Videos were shot on location in Las Vegas - SEMA 2008
Enjoy
- Joe Z
04-25-09, 10:00 PM
#14
Tech Info Resource
iTrader: (2)
Stroking to 91.5 drops red line to 6555 rpm for any long term reliability. Anything over that is asking for a seriously short service life. Besides that, a 6mm overbore in a Toyota engine? Wow. They've not made a block that full of meat for a very long time unless 5Axis have removed the existing bores and replaced them with a whole new bore and deck combination. This kind of mod means even shorter long term reliability. The power will be nice. The problems will be immense.
04-26-09, 08:33 AM
#15
Lexus Connoisseur
FiveAxis didn't do the engine work. It was done internally at Toyota Motorsports Garage.