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Old 11-04-2010, 12:43 PM   #1
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99 lpt head with tdo4?

Hello- I bought a 2000 aero with a slung rod. I then bought a 99 lpt engine to replace it. I have the block and lpt head at the machine shop right now for some love. It came to my attention somehow that the pistons and valves are different between 99 and 2000 and I am wondering if I will be ok to run this motor with the aero ecu and turbo? I would use the HOT head if it weren't for two bent valves and the associated work on the head. I have put the project on hold until I can find answers and am having a hard time finding one... Anyone want to inflict some pain on me?

pleaze and thank you!

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Old 11-04-2010, 01:03 PM   #2
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The aero has fancy, nimonic valves. They're more heat resistant than the standard valves. That said, you'll be fine with the regular valves.
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Old 11-04-2010, 01:39 PM   #3
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Thanks for the reply! How about the pistons... Is it worth fretting over the beefier pistons of the B235R? I have three from the old engine provided they are the same size (not sure and I don't have them handy to measure...)

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Old 11-05-2010, 05:09 AM   #4
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Pistons on all 9-5s 2.3L are all the same LPT/Linear/Arc 4cyl/ Aero

N/m n/m
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Old 11-05-2010, 06:38 AM   #5
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Quote:
Originally Posted by raab saabz View Post
Thanks for the reply! How about the pistons... Is it worth fretting over the beefier pistons of the B235R? I have three from the old engine provided they are the same size (not sure and I don't have them handy to measure...)

Raab
Exactly the same in both engines, not worth the trouble.
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Old 11-05-2010, 07:13 AM   #6
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You will wnat to use the one piece intake manifold from your 2000 ( in case you got the other one from the other engine...
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Old 11-05-2010, 03:40 PM   #7
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alrighty then...

Once again many thanks for the reassurance.... The machinist called today and said it's ready to go so I get to start reassembly pretty soon.. Can't wait... I guess I will forever be worrying about those valves though
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Old 11-05-2010, 04:38 PM   #8
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Once again many thanks for the reassurance.... The machinist called today and said it's ready to go so I get to start reassembly pretty soon.. Can't wait... I guess I will forever be worrying about those valves though
The valves aren't going to be any issues at all. Plenty of people with pretty highly tuned cars without the nimonic valves. My nearly 500hp 9k Aero started life as an automatic - hence no nimonic valves...no issue, LOTS of miles with well over 300hp on that car, and quite a few with well over 400hp.
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Old 11-09-2010, 06:18 AM   #9
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My 2.4L 18T 9-5 runs fine without nimonic valves.
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