KamB
Kam Berry
Any idea what timing belt to use for a 2.5 block/ 2.2 head hybrid? Not sure if marks are different for them, don't want to deal with it being timed wrong hahah. Would just a 2.2 one work?
Timing belt for 2.5?a
- Thread starter KamB
- Start date
Rmayo
New member
i think the only differences are between sohc and dohc so you should be fine
KamB
Kam Berry
Okay cool. Ill
Okay cool. Ill obviously check it first by hand haha just if it doesn't hit I can't tell until I fire it up and it runs like crap :/
IBratmanI
Subaru Ambassador- AdidaSubarus
Yeah use the 2.2 timing kit and you'll be good to go. Cometic makes head gaskets for that motor set up now. So that all the coolant passages and everything line up correctly.
KamB
Kam Berry
I would think if its only 1 tooth off on the belt it would still run, just like crap? Idk this is just my v8 knowledge, never messed with subaru timing.It won't run... Just go boom and then you go
Ohh no way nice ill have to look into that. Thanks for the tip.
Chris
YARRR SUBY MONSTER!!
Yep, just use the 2.2 timing stuff, it'll work fine. I've done it.
You can be off at least 3 teeth and not bend valves, at least from what I've seen... I got my outback with the belt off two teeth, it ran pretty crap, but it didn't hurt anything.
I didn't realize cometic made gaskets for this, but you can also just use the STi MLS gaskets, they'll work just fine. People have been doing this swap for a while, and no issues from just using a 2.5 headgasket.
You can be off at least 3 teeth and not bend valves, at least from what I've seen... I got my outback with the belt off two teeth, it ran pretty crap, but it didn't hurt anything.
I didn't realize cometic made gaskets for this, but you can also just use the STi MLS gaskets, they'll work just fine. People have been doing this swap for a while, and no issues from just using a 2.5 headgasket.
KamB
Kam Berry
So, does this mean I can put the cam either advanced or retarded to move the powerband, such as is done on v8's?
Chris
YARRR SUBY MONSTER!!
This isn't a carbed SBC, this is a fine piece of fuel injected Japanese engineering...I've never heard of anyone doing this on subarus, and I can think of a few reasons it wouldn't work well. Mainly the computer is expecting the cam and crank sensors to be doing the same thing at the same time, and when they don't, it goes into run like shit mode.
Just get a set of delta re-grind cams for it.
KamB
Kam Berry
Hahah i wasn't going to do it, just a question. But good point. I did not think of the computer aspect, that would make it run like crap.
JoshP
New member
which HG are you using? I've used 2.5 belt and tensioner with phase 2 thin gaskets, and 2.2 belt with phase 1 thick gasket.
KamB
Kam Berry
JoshP
New member
cool, yea that's the best setup imo, everything lines up better and compression is more reasonable. Its also less prone to interference, probably not even interference engine at all.