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Astron 1 or 2?
Posted: Mon Jan 21, 2008 7:49 pm
by NCpaj
gday fellas
i just got a question about the 2.6 petrol motor- i recently got some of those 2.6 astron 2 badges off a sigma- iam going to put them on the paj as a bit of bling (lol
) and i was jsut wondering if my 4g54 was a astron 1 or 2?
its a 1986 jan NC
thanks ofr the help
Posted: Tue Jan 22, 2008 8:37 pm
by NCpaj
anyone??
Posted: Tue Jan 22, 2008 9:04 pm
by -Scott-
OK, I'll fark this up for you.
Manifold wise, they're the same pattern as Astron 1. But I believe pistons are more like Astron 2 (flat top instead of dished.)
I believe Astron 2 use hydraulic tappets, Paj has adjustable tappets. Not sure how "block width" lines up: in the Sigma, manuals and autos have slight differences in "block width", not sure which one the Paj "matches."
Which is why I didn't answer earlier - because the short answer is "NFI".
Posted: Wed Jan 23, 2008 7:29 am
by NCpaj
OK, I'll fark this up for you.
Manifold wise, they're the same pattern as Astron 1. But I believe pistons are more like Astron 2 (flat top instead of dished.)
I believe Astron 2 use hydraulic tappets, Paj has adjustable tappets. Not sure how "block width" lines up: in the Sigma, manuals and autos have slight differences in "block width", not sure which one the Paj "matches."
Which is why I didn't answer earlier - because the short answer is "NFI".
ahhh ok
righto so more or less its an astron 1- its just got those '2.6 astron 2 badges' ill just change it to read astron 1 then
Posted: Wed Jan 23, 2008 6:52 pm
by blown26paj
exhaust patern is the same in both astron 1 and 2 however the inlet manifold are different i efi a couple of l200s years ago and found out the hardway on one. the best way to tell without pulling too much apart is lift the rocker cover at the back of the rocker gear there are four retaing bolts on astron 2, astron 1 only retained by 2 bolts they are interchangable the astron 1 did have dished pistons as i put them into mine to help decompress mine.
Posted: Wed Jan 23, 2008 7:59 pm
by known 2
hey riley, was at bue repairs last friday and saw ur pajero there.. no mudies though?
Posted: Wed Jan 23, 2008 8:03 pm
by NCpaj
known 2 wrote:hey riley, was at bue repairs last friday and saw ur pajero there.. no mudies though?
yeah that would have been it- i was getting a wheel alignment- i only work up at koala
no muddies?-lol the tyre nosie on the highway gives me the shits and im trying to save the mtz just for bush trips
i heard u got a troopy--nice
exhaust patern is the same in both astron 1 and 2 however the inlet manifold are different i efi a couple of l200s years ago and found out the hardway on one. the best way to tell without pulling too much apart is lift the rocker cover at the back of the rocker gear there are four retaing bolts on astron 2, astron 1 only retained by 2 bolts they are interchangable the astron 1 did have dished pistons as i put them into mine to help decompress mine.
ahh ok- i remeber dished pistons when i did the rebuild- so its an astron 1 then cool