| Author | Topic |
|---|
Registered:
October 2003
|
 SW20 MR2 timing belt myth?
|
Fri, 31 October 2003 13:14
|
 |
My friend told me that with the MR2's that when the timing belts shit itself, the engine turns off unlike other car where the piston's fly and hit the top of the engine???
IS IT TRUE???????
|
|
|
I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
|
|
Re: SW20 MR2 timing belt myth?
|
Fri, 31 October 2003 13:26
|
|
wouldn't matter if it happened at 5000rpm.
momentum would keep it going long enough to do the damage
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: SW20 MR2 timing belt myth?
|
Fri, 31 October 2003 15:13
|
|
| MR2200 wrote on Sat, 01 November 2003 00:14 |
My friend told me that with the MR2's that when the timing belts shit itself, the engine turns off unlike other car where the piston's fly and hit the top of the engine???
IS IT TRUE???????
|
you mean that the motor is "non-interference" like the 4AG?
|
|
|
Location:
sydney
Registered:
April 2003
|
|
Re: SW20 MR2 timing belt myth?
|
Fri, 31 October 2003 22:57
|
|
|
the 3s-fe and 5s-fe are non-interference so i'd be pretty sure the 3s-gte would be the same.
|
|
|
Location:
Brisbane
Registered:
May 2002
|
|
Re: SW20 MR2 timing belt myth?
|
Sat, 01 November 2003 00:40
|
|
All Toyota production engines with timing belts are non-interference. This means a broken belt won't result in broken valves/pistons.
|
|
|
I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
|
|
Re: SW20 MR2 timing belt myth?
|
Sat, 01 November 2003 01:31
|
|
really?
that is good news.
why dont other companies do this? (are the rb series engines non-interference?)
|
|
|
Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
|
|
Re: SW20 MR2 timing belt myth?
|
Sat, 01 November 2003 01:46
|
|
so they can sell you a whole new motor when it breaks, and then chastise you for not following their maintanence schedule 
the reason is that to have to motor non-interference, the fuly open valve musn't come into contact with the piston at TDC (obviously) and this takes a little more creative effort when designing the piston and head.. effort they cbf going to.... the tradeoff for non-interference is chamber/piston shape, and compression ratio. it's easier to have higher CR with interference..
anyhoo,
Cya, Stewart
|
|
|
Registered:
October 2003
|
|
Re: SW20 MR2 timing belt myth?
|
Sun, 02 November 2003 04:34
|
|
WOO HOO!!!!!!!!!!!!
im right....... Thanks guys for the feed back..
|
|
|
