Re: 4kq Timing belt/clearance

[James Marriott <marriott@micron.net>]

Phil Payne wrote:
> 
> In message <34970EFA.FE42AD6A@uidaho.edu> Todd Phenneger writes:
> 
> >     I know I should know the answer to this.  BUt, is the 2.22L engine
> > in my car an interference engine.  ie. if my timing belt goes out, will
> > my engine eat my valves?  I plan on  dropping a turbo in my car next
> > summer so I really dont want to replace the belt if I dont have to.
> 
> Supposedly, the 2.22l non-turbo engines can be hand-turned without the belt on.
> I find this odd, because the 2.22l turbo engines can't - they interfere even
> at 0 rpm.

When I had my head off in February (neck trouble, actually) I did some
measuring here. The piston edges barely reach the block deck. The piston
has a pretty pronounced dish (8.5:1). The valves (granted, hyd lifters,
no oil pressure) were ~0.040 in (1.00 mm) from the bottom of the head.
The gasket has thickness. Based on this, I'm thinking the _US_-spec 4kq
(2.2 l, 8.5:1) is NI. I hope so, as I'm not afraid of the limiter (just
ask Tom ;-). The belt only has 25k on it, but the engine has 161k.

my 3 pfennings at current exchange,
James
'87 4kq, NI IMO
'86 4ks, ?
'64 Falcon Sprint conv, NI??? It has a chain! Who cares!?!