why did timing belt interval change to 90,000 in 1998 - Club Lexus Forums

Go Back   > > > >
Log In 

why did timing belt interval change to 90,000 in 1998

Reply
 
 
 
Thread Tools Search this Thread
Old 01-04-08, 10:59 PM   #1
WDoherty
Pole Position
Thread Starter
 
Join Date: Apr 2006
Location: Texas
Posts: 245
Default why did timing belt interval change to 90,000 in 1998

I'm just curious why the recommended interval when from 60,000 for the sc400 to 90,000 in 1998, especially when the sc400 engine went interference in 96? The real question is i have a 92, the first belt was changed at 63,000 and i'm now at 128,000 and have the new timing belt kit, but considering all the labor, do i really need to change it now or wait for 90,000 miles to roll around, my father didn't change the timing belt on his 95 corolla till 120,000 miles and had no problems so i just wonder.
WDoherty is offline   Reply With Quote
Old 01-04-08, 11:09 PM   #2
O. L. T.
Keeper of the light
iTrader: (17)
 
O. L. T.'s Avatar
 
Join Date: Feb 2003
Location: My little world
Posts: 33,591
Default

You're asking a question about an engine part. This can go either in maintenance or the engine forum.

To answer your question, simple............. VVTI.
O. L. T. is offline   Reply With Quote
Old 01-05-08, 11:22 AM   #3
JBrady
Lexus Champion
 
Join Date: Feb 2001
Location: Texas
Posts: 3,081
Default

When I changed my 99 at 95k miles it looked very good. Toyota/Lexus is very conservative so the 90k interval on the interference engines is very SAFE. Your engine has the same basic parts and belt construction. It is also non-interference as you pointed out. I would go ahead and adopt the 90k interval.
JBrady is offline   Reply With Quote
Old 01-05-08, 05:54 PM   #4
KC95SC400
Lexus Test Driver
iTrader: (3)
 
KC95SC400's Avatar
 
Join Date: May 2007
Location: NC
Posts: 1,270
Default

Quote:
Originally Posted by O. L. T. View Post
You're asking a question about an engine part. This can go either in maintenance or the engine forum.

To answer your question, simple............. VVTI.
What does vvti have to do with anything? It doesn't affect belt wear.

The answer IS simple, it's marketing. Low maintence sells....

KC
KC95SC400 is offline   Reply With Quote
Old 01-08-08, 02:07 PM   #5
WDoherty
Pole Position
Thread Starter
 
Join Date: Apr 2006
Location: Texas
Posts: 245
Default

Quote:
Originally Posted by KC95SC400 View Post
What does vvti have to do with anything? It doesn't affect belt wear.

The answer IS simple, it's marketing. Low maintence sells....

KC
Thanks, i knew the 98 went to vvt-i and that more likely answers the question: marketing. I couldn't imagine how this change would affect belt wear either. So i pulled of the cam cover last night to look at the belt and it looks brand new, so i am going to extend the interval to 90,000 and sell the timing belt kit that i bought.
WDoherty is offline   Reply With Quote
Old 01-08-08, 03:51 PM   #6
link13
Lexus Champion
 
link13's Avatar
 
Join Date: Nov 2001
Location: Palookaville
Posts: 3,159
Default

The interval on my '94 GS300 was 90K. I had a former Lexus tech tell me the engine in the 1994s were non-interference and the belt could esily go 120K miles. When I had it changed at 120K miles, the mechanic told me the old belt looked fine, but he replaced it. I think you're fine going to 90K miles.
link13 is offline   Reply With Quote
Old 01-08-08, 05:52 PM   #7
LexusFTW
Lexus Test Driver
iTrader: (7)
 
Join Date: Sep 2005
Location: Tulsa
Posts: 1,459
Default

Quote:
Originally Posted by O. L. T. View Post
You're asking a question about an engine part. This can go either in maintenance or the engine forum.

To answer your question, simple............. VVTI.
That doesnt answer anything. Nice try though.
LexusFTW is offline   Reply With Quote
Old 01-08-08, 09:45 PM   #8
LEXpert
Pole Position
 
Join Date: Jun 2004
Location: Canada
Posts: 293
Default

I have a 92 SC, the T-belt was changed at 109 000 km (about 68 000 miles), and on the advice of a Lexus tech, he said adopt the 150 000 km interval (93 000 miles). I plan to change the belt at 259 000 km (161 000 miles).

I'm at 253 000 km (157 000 miles) with no ill effects as of yet.
LEXpert is offline   Reply With Quote
 
 
Reply


Tags
1998, 2001, 60000, 90000, belt, change, es300, gs400, interval, intervals, lexus, maintenance, replacement, rx400h, sc400, timing

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 04:12 PM.


Copyright © 2000-2016 Internet Brands, Inc. All Rights Reserved