18RG Torque Settings??

[ganador]

Just seeing if someone know the torque setting to the Head, Rods, crank, ect. For the 18RG.

Thanks, Dave.

[ganador]

ok ive dug up all the info i need but for the 18RC, would it be the same like the crank torque and rods.

[river]

Hi,

The cyl head ones are different on the 18R-C as opposed to the 18R-G. Most of the block stuff is the same.

Cylinder Head Bolts => 10.0 - 12.0kg-m (72.3 - 86.8 ft-lb)
Bearing Cap Nut => 1.2 - 1.8 kg-m (8.7 - 13.0 ft-lb)
Camshaft Cap Nuts => 10.0 - 12.0 kg-m (72.3 - 86.8 ft-lb)
Camshaft End Nuts => 7.0 - 8.0 kg-m (50.6 - 57.9 ft-lb)
Bearing caps => 10.0 - 11.0 kg-m (72.3 - 79.6 ft-lb)
Rod Cap => 6.4 - 7.0 kg-m (46.3 - 50.6 ft-lb)
Fly Wheel => 8.2 - 8.8 kg-m (59.3 - 63.7 ft-lb)

Hope this helps.

seeyuzz
river

[ganador]

Hi,

The cyl head ones are different on the 18R-C as opposed to the 18R-G. Most of the block stuff is the same.

Cylinder Head Bolts => 10.0 - 12.0kg-m (72.3 - 86.8 ft-lb)
Bearing Cap Nut => 1.2 - 1.8 kg-m (8.7 - 13.0 ft-lb)
Camshaft Cap Nuts => 10.0 - 12.0 kg-m (72.3 - 86.8 ft-lb)
Camshaft End Nuts => 7.0 - 8.0 kg-m (50.6 - 57.9 ft-lb)
Bearing caps => 10.0 - 11.0 kg-m (72.3 - 79.6 ft-lb)
Rod Cap => 6.4 - 7.0 kg-m (46.3 - 50.6 ft-lb)
Fly Wheel => 8.2 - 8.8 kg-m (59.3 - 63.7 ft-lb)

Hope this helps.

seeyuzz
river

Yeap it sure did thanks River. I'm doing a minor rebuild on my 18RG. I just finished doing my rod bearings then so the sumps back on now. Thanks.

[RA35GT]

Here is a scan of the manual mate.



Rudi

[ganador]

Here is a scan of the manual mate.



Rudi

Thanks again to your help.. By the way hows your MX73 going wiht the 7m. I bought a MX73 for 50 bucks and was thinking about that conversion.

[Steve M]

7MGTE MX73 put down the better head bolt tensions.

River, did you list the 18R-C figures there? Those head bolt tensions look too tight for using a STD head gasket (copper HG should be ok)
I've seen two 18RGU heads that have had their backs broken, I reckon that people used the 18RC cast iron tensions with the 18RG alloy head.

[river]

Hi,

The figures were for the 18R-G. However, maybe the 18R-GU has a different torque setting? However, I will recheck again.

seeyuzz
river

[ganador]

hey guys which way does the rod end cap go?? haha. i cant remember

[barned01]

i feel like slapping
flame suit on
if i type '18rg torque settings'' (exactly what you are looking for) into the search feature (simple search no less) i get a result of 5 possible threads.
thats right 5
not 200, but 5
now we can take one of those threads away because you started it, so that now leaves 4
you had 4 threads you could have trawled through before asking that question
not 200, but 4

now i am being biassed ecause i wrote one of them (the one you are looking for ironically), but surely it wouldn't have taken ANY effort for you to have searched first before asking.
And you sure as hell can't use the excuse that 'i searched but couldn't find anything' because search revealed, using your exact title no less, the result you were looking for.

flame suit off
now
as for the rod caps, you will find if you look at the end of them, they will have a slight rhompus shape to them, possibly even an arrow stamped into it (i can't remember), either way the taper of the rhombus should be such that it is facing towards the front of the engine, likewise if it is an arrow, it should be facing towards the front of the engine.
good luck
barnsey

[ganador]

for the rod caps, you will find if you look at the end of them, they will have a slight rhompus shape to them, possibly even an arrow stamped into it (i can't remember), either way the taper of the rhombus should be such that it is facing towards the front of the engine, likewise if it is an arrow, it should be facing towards the front of the engine.
good luck
barnsey

So what ive gotten from that is the higher piece faces the front like in the pic

[barned01]

hmm that's not how i remember it looking, i can't remember now maybe i am thinking of the mains caps. i will check a spare rod tonight when i get home.
Also there should be a flat bit on the side of the cap with half of a number stamped into it, have a look at the corresponding rod itself (i see you numbered the cap, so i assume that means you numbered the rod also), the cap and rod should orientate correctly such that the number becomes complete.
then you can look at the rod, there is a raised little 'button in the rod itself that faces towards the front of the engine.
if my paint skills were good i could show you what i mean, but i have a meeting to go to in 10 minutes and that paint picture will take at least 7 hours

[ganador]

Stupid question was here.

[ganador]

Ok another question, this one is stepping out of the subject so i hope you subscribers can help. The 18RG motor i got came with the 88250 head but the head was completly shit, so i got another one which was the 88253 head which was a little better but still needed alot of work. just wondering if replacing the 88250 head wiht the 88253 head is problems??? like say with the valve clearance with the piston or what eva.

[barned01]

the 88253 head should go onto the standard 18r(g variant) block no problems.
although there was a difference in pistons to accomodate for various compression ratio's over the years, the pistons have cutouts in them to accomodate for the valves,
so say you have a 18rg block (early block with big domed pistons)
ordinarily it would have an 88230 head on it, you can happily throw this head away and source a newer head, say an 88270 head from an efi 18rg
this head will happily sit on your existing block without any pistons fouling any valves (although i don't know of anyone that has actually got this most desired setup.)
there is a slight change in valve diameters i think between various generations of heads, but i don't think this is what you are talking about (ie changing the valve train from the 88250 head tot the 88253 head)