4A-F: interference or non? - Toyota Nation Forum : Toyota Car and Truck Forums

eage8 · 01-15-2007, 11:37 PM

hey, the other day my timing belt crapped out on me, so now both my cars don't run lol :-P .

does anyone know if the 4a-f is non-interferance? I don't want to have to go through the trouble of replacing the belt just to find out it ate a valve.

thanks guys.

freakinbox · 01-15-2007, 11:55 PM

Non, so is the 4age 16v's.... not sure about the 20v

Flashmn · 01-16-2007, 07:20 AM

Problem is if its ever in its history had a head gasket change with head machining... it might be interference.

ghost_ryder35 · 01-16-2007, 09:14 AM

Quote:

Originally Posted by eage8

hey, the other day my timing belt crapped out on me, so now both my cars don't run lol :-P .

does anyone know if the 4a-f is non-interferance? I don't want to have to go through the trouble of replacing the belt just to find out it ate a valve.

thanks guys.

so take the head off and do the headgasket and timing belt at the same time and take a little look to see if it "ate a valve" and if it did replace, or discard engine and purchase new one

darcsyde · 01-16-2007, 07:05 PM

it's a non-interference engine

punter · 01-16-2007, 07:46 PM

Also just for the record the ST 20v is non interference. BT 20v is interference.

diver9000 · 01-17-2007, 09:03 PM

Quote:

Originally Posted by punter

Also just for the record the ST 20v is non interference. BT 20v is interference.

BT is interference? I thought both 20v were non...

gekishibu86 · 01-18-2007, 02:07 PM

All belt driven Toyota engines are non interference except for the V8 i-force. All chain driven are interference.

freakinbox · 01-18-2007, 02:20 PM

I thought they weren't but I wasn't sure so I didn't say anything :p

Did you hear any HORRIBLE noises when the belt went?

eage8 · 01-18-2007, 10:53 PM

thanks guys, I already ordered the new belt.

freakin box: no, I didn't hear any wierd noises at all, it broke one night when I tried to start it and it just sounded funny. I thought it was the starter at first.

punter · 01-22-2007, 06:41 PM

Quote:

Originally Posted by gekishibu86

All belt driven Toyota engines are non interference except for the V8 i-force. All chain driven are interference.

That is not true at all. Most single cam belt drive toyta engine are interference 2e's 1s's 2s's etc. etc. Blacktops are interference.