For the love of a tractor engine: The life and times of the 18R-G

[roadkill]

Hi,

yeah, sorry, gotcha now. I was pretty sure that the engine mounts could only go on one way aswell.

As for the flywheel bolts - i've never used loctite on them and i've never pulled one apart that had loctite on them either.

bEn

[o_man_ra23]

Depends what kind of performance you are after, and how much faith you have. Me, I'm an athiest with an 18R-GTE, so I used loctite

[Javal]

This thread needs some love.

My rather sizable pistons rocked up today. No pictures, i left them at work by accident.

[o_man_ra23]

To take away the love you have just given, I have a suspected BHG

Symptoms:
Excessive blowby - could also have been caused by running in oil getting to the end of its life, but I have doubts...
1 to 4 compression is 160 - 90 - 90 - 145 so I suspect blown between 2 and 3 (this measurement was taken cold)
Rough idle and hard to start hot or cold - I am still programming the ECU, but I got the idle bearable, then it got worse without changing program

Now I haven't overheated the engine, so cooking it is very unlikely. Overboosting is quite probably the cause, as the stopper on the wastegate actuator (two port item factory from a Gen 2 3S-GTE) blew off at some point. Due to the engine's happy revving nature, and the boost guage rolling around in the centre console, I have a feeling it was a day or so between when it started over boosting and when I noticed I think it was getting well beyond 10psi.

So tomorrow, I will check the head bolt tensions, and if they come up trumps, then I will start the arduous and much unliked task of taking off the head and checking the gasket

If anyone wants to point me in the direction of a multi-layer metal head gasket and some ARP head studs, that would work well... I'll start trawling through the lengthy 18R-G, 18R-GTE and Classic Celica threads, as well as the Classic Celica Index though in search of said info.

Oh, and one last thing. There is no inter-mixing between water and oil.

[JustenGT8]

Just to add some colour to the thread.....here's what a 2.4litre 18RG looks like from the outside

[Javal]

'daddy spends more time on this bloody thing than with me'? haha

[JustenGT8]

To take away the love you have just given, I have a suspected BHG

.

Bummer

The stock HG is pretty good. Used to take 20+ psi on my motor no worries. The head bolts are another matter though and would stretch on anything over 18psi eventually (i had a low 7.5:1 comp) so i'd say theres your problem.

Last i checked ARP don't do a bolt in kit but the maching to get something of suitable length to fit would be pretty straight forward. Dunno of a MHG either but if there's one out there then a good option for sure.

[river]

Hi,

Ohh, I like that!!! Is that going to be a turbo'd 2.4 18R-G?

Oman, send YellaRolla.. (or is it YelloRolla?) a PM and aks him as he knows of metal gaskets and other shit, as he's done a few 18R-G builds for hi power turbo.

seeyuzz
river

[roadkill]

Hi,

Kameari does them clicky

Not cheap but i wouldn't ever expect them to be anyway.....Dunno about head bolts thouh


bEn

[Javal]

Hi,

Kameari does them clicky

Not cheap but i wouldn't ever expect them to be anyway.....Dunno about head bolts thouh


bEn

You'll notice that the Kameari ones suit 92mm bores (i.e. 2.2L motors)

I'd be interested in ARP headstuds also.

[roadkill]

Hi,

toyhead has them also but i would assume that they are from kameari.....

bEn

[Javal]

Hi,

toyhead has them also but i would assume that they are from kameari.....

bEn

Indeed they are.

[JustenGT8]

Hi,

Ohh, I like that!!! Is that going to be a turbo'd 2.4 18R-G?

Oman, send YellaRolla.. (or is it YelloRolla?) a PM and aks him as he knows of metal gaskets and other shit, as he's done a few 18R-G builds for hi power turbo.

seeyuzz
river

Not initially River.

It's an EFI head but running carbies so if i do end up with a turbo setup it'll be old skool blow thru with the solex's modded to suit

[river]

Hi,

It's an EFI head but running carbies so if i do end up with a turbo setup it'll be old skool blow thru with the solex's modded to suit

I have bone.

seeyuzz
river

[MnToyGuy]

To take away the love you have just given, I have a suspected BHG

Symptoms:
Excessive blowby - could also have been caused by running in oil getting to the end of its life, but I have doubts...
1 to 4 compression is 160 - 90 - 90 - 145 so I suspect blown between 2 and 3 (this measurement was taken cold)
Rough idle and hard to start hot or cold - I am still programming the ECU, but I got the idle bearable, then it got worse without changing program

Now I haven't overheated the engine, so cooking it is very unlikely. Overboosting is quite probably the cause, as the stopper on the wastegate actuator (two port item factory from a Gen 2 3S-GTE) blew off at some point. Due to the engine's happy revving nature, and the boost guage rolling around in the centre console, I have a feeling it was a day or so between when it started over boosting and when I noticed I think it was getting well beyond 10psi.

So tomorrow, I will check the head bolt tensions, and if they come up trumps, then I will start the arduous and much unliked task of taking off the head and checking the gasket

If anyone wants to point me in the direction of a multi-layer metal head gasket and some ARP head studs, that would work well... I'll start trawling through the lengthy 18R-G, 18R-GTE and Classic Celica threads, as well as the Classic Celica Index though in search of said info.

Oh, and one last thing. There is no inter-mixing between water and oil.

Owen, Cometic has copper HG's for under $100 US, in varying thicknesses. Just tell them it's an 18RC. I can assist with shipping if they don't want to ship over the pond.

ARP's are like $1200 a set (mains and heads), but for a GB of 5 sets, it's $414 per set. If you do a GB, count me in for a set and another guy on 1GC will be in as well.

For a single set, Paeco is the way to go. They have a great name in motorsports and the quality is at least as good as ARP:

http://www.paeco.com/Head%20&%20Main%20Studs.htm

This thread I wrote may be useful as well (need to be a 1GC member to view)

http://1stgencelica.com/forum/viewtopic.php?f=10&t=904

And rumor has it that 22R head studs work, but need to be cut down.