High CO

[SuperRoo]

I hate it when reading a series of posts you come across no conclusion. So, not to put myself in that boat, i thought i'd post up my findings to those that so kindly helped me along a few months back.

I really wanted to discover the origins of my renix or 'frankenjeep' :looney: as Ecomike so kindly put it

Note from DJ
This information may help you identify what the previous owner swapped into your Jeep
Block casting no location can be found hear in post # 2 by CJ7-Tim
http://www.jeepforum.com/forum/f11/4-0l-serial-number-location-995174/

Head casting number by years
It is easy to determine what head you have. On the driver’s side, about halfway down the cylinder head between #3 & #4 fuel injector but below the valve cover clean the lip of the head with a rag or solvent if really greasy. With a good light, you can read the casting number of the head.

Head casting number by years
Casting numbers are as follows:
Year............Casting No
1987-90......2686
1991-95......7120
1996-99......0630
2000-01......0331

Well my head number is 0630, so puts it between 1996-99 according to the above

Whereas my block is 53010841 putting it at the 1999 mark - as detailed below -

Block Casting Numbers (borrowed from CJ7-Tim, from Jeepforum)
Year............Casting No
1987-90......53005535 (8933002665)
1991-95......53008405
1996-98......53020569
1999-04......53010449

So my educated guess is it's a '99 engine with Renix manifolds & electronics.iratefla
_______________________________________________________
1988 Cherokee Laredo 4.0L 4WD Auto - formally from California

 

[Ecomike]

A 99 Renix in London, LOL!!!!

 

[SuperRoo]

She also 'eventually' passed her smog. The garage spent quite a bit of time on it, they even popped in some magic snakeoil from these guys, http://www.forteuk.co.uk/ that seemed to do the trick???

Can't comment whether it is as good as seafoam or bg44k, the jury is still out. My mileage around town hits 10-12mpg, whilst away on holiday, she returned 22-24mpg - most of it cruising around 55-60mph

I really would like to get better mileage putting around town, but may end up just using her for the long hauls...

__________________________________________________________
1988 Cherokee Laredo 4.0L 4WD Auto - formally from California