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

[o_man_ra23]

Need a bit of a favour here - which should benefit many others also. Anyone who has access to both an 18R-G variant, and either an SR20DET or 1/2JZ w/out VVTi, could you please see if the coil on plug setup from the other motor will fit the 18R-G? It doesn't need to be a neat fit, it just has to engage the plug all the way without sitting so proud of the head that it would foul the bonnet. From my research, the SR20 coil may be too long, and the JZ coil may be too short. Both are borderline from my rough measurements, and both would be sloppy in the hole, but I can make an adapter to suit.

[timbosaurus]

Owen, I'm good to you!!!

Unfortunately coilpack heights aren't so good. Look pretty silly sitting up so high.

VE HFV6


Toyota somethingNZZ


S13 SR20

[o_man_ra23]

SR20 looks the best so far. Will try the 2ZR-FE COP from the wife's Rolla before going further though (but fear it will end up too long like the others). I will be making an escutcheon plate to suit, so the height won't look quite as dicky when I am done. I am also going to use modern ISO length plugs, so the coil pack will sit a few mm lower again on mine.

Those NGK leads look pretty awesome...

[ra_28]

1JZ Coil Pack

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[o_man_ra23]

I take it the JZ coil pack did engage the plug fully? Could work out as a suitable option.

[timbosaurus]

What's with that tape? Did u shorten it?

[o_man_ra23]

Probably a stress crack being insulated to prevent tracking...

[ra_28]

I take it the JZ coil pack did engage the plug fully? Could work out as a suitable option.

Seems like it did, I'll have a better look tonight.

What's with that tape? Did u shorten it?

LOL Not sure it came with a spare head I purchased. I did read that they were bad for getting cracks and tracking so yes the tape is probably there to stop that.

Alex

[timbosaurus]

Ah, cool. Then yes, it does look like a good length

[o_man_ra23]

Only problem is the JZ coils require a separate ignitor. S15 SR20DET coils have an integral ignitor and are physically the same as the S13/S14 units otherwise.

[The Witzl]

mate - those Microtech X4 ignitor boxes are both farken reliable, and cheap.... like around $100 or so.

I might give the JZ coilpacks a good look in.

[o_man_ra23]

Do you have a link to where I may procure said X4 ignitor box?

[MnToyGuy]

Witzy, that was me asking about the valves, and I ended up finding them with SWMotorsports. Stainless at $22ea.

Owen, did they fit right without mods? I've heard they are shorter than stock from otheres that used them.

My engine builder sent them back to have the groove for the keeper ground deeper. They said it was close, looked like it fit, but engine running it likely wouldn't stay engaged and you could drop a valve.

Here's my writeup on RG parts sources from 1GC website

Specs


Valve Springs
http://www.crowcams.com.au/templates/Ca ... -App.shtml
http://www.crowcams.com.au/templates/Ca ... ring.shtml
PART NUMBER MODEL ENGINE I/H OD INT. ID SEAT PRESS .5 LIFT SOLID HEIGHT
5827 Corona 18RG 1.5 1.32 0.98 70 185 0.88

Valve Shims
http://www.pirate4x4.com/tech/billavist ... 0tools.pdf
It's on page 72 if the link doesn't bring you directly there. I still haven't figured out which BMW engine they are the same as. All the searches I did seemed to pop up with 13mm shims for the beemers. This is no longer in production, for reference only.


Parts

All bottom end parts are common the 18RC and widely available. I suggest RockAuto Auto Parts.
Head gasket for an 18RC can be used, one hole is smaller (coolant hole?).

Valves
SI VALVES- ANTIQUE/VINTAGE ONLINE CATALOG
http://www.swmotorsport.com/

Guides
SI VALVES- ANTIQUE/VINTAGE ONLINE CATALOG
http://www.swmotorsport.com/
Kameari - Auto Mechanical Engineering

Valve Seals
http://www.swmotorsport.com/
Engine Builder Products Enginetech Engine Kits Engine Parts Engine Rebuild (Hi-temp viton valve seal, 11/32" stem .582 Guides , Part # S9210-20)

Valve Springs
http://www.performancesprings.com.au/46dualsprings.html
CATCAMS Introduction page: the pearly gates to engine power!
http://www.swmotorsport.com/

Shims
PRECISION SHIMS AUSTRALIA | INLET SHIMS | EXHAUST SHIMS | VALVE SHIMS
Procycle - K&L Valve Shim Refills
Evidently Kawasaki motorcycle shims can be used

Gaskets
http://www.swmotorsport.com/ (complete and partial sets)
Cometic Gasket, Inc. (head gasket including copper)
Kameari - Auto Mechanical Engineering
18RG Parts
Toyota Japan (you need a contact in Japan)

Pistons
Kameari - Auto Mechanical Engineering
Arias Pistons (custom)
Venolia Pistons and Rods (custom)

Cam Pulleys
Kameari - Auto Mechanical Engineering

Upper Guide
http://www.swmotorsport.com/
18RG Parts

Bearings
http://www.swmotorsport.com/

Cams
CATCAMS Introduction page: the pearly gates to engine power!
18RG Parts


Misc Info

Paradise Racing may be a resource. The text in a dead link to their site read: "Pardise Racing can custom make a valve train kit for your Toyota 18R & 18RG motors. ... Valve Seals, $25.00. Keepers, Bronze Guides, $99.00 ..." They used to carry everything, but their source fell through. They are going to Japan this summer to find new sources (for various things) and I told him if they carry 18RG stuff, we'll put it in the vendor section.

Toyhead has the same stuff as Kameari, so I didn't list him where the overlap is. He's adding new stuff always, so check in peridoically

FIPG can be used in place of some gaskets, maybe one of you vets can pipe in as to where.

(from Toymods) Terry OBiernw of Road & Track at ipswich (AU) can make the chain guides.

Timing chain:
Lower is the RC. Upper, get one for for a 20R (98 link), but your colored links will be different from the official one

All the gears for the crank and auxiliary shaft are RC. If you buy from RockAuto Auto Parts you can get all new gears, chain, lower tensioner and guide for under $100.

Tim’s Toys used to be able to get a lot of stuff (new and used) but he hasn’t responded to my e-mails for a year. [email protected]

In order to keep this as useful as possible, I’ll just edit this thread. If you have additions, let me know and I’ll add it above.

[2004lowlux]

got to the bottom of why my rg isnt starting.
after checking absolutely everything i hooked a compression tester on it and what do you know 70,60,80,90 psi respectively.


kill me now!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[o_man_ra23]

That's a little low... did you put rings in??

On a different note, got my head back from the machinist today, the exhaust valves fit fine, the intake valves were apparently about 1mm oversize when they cut the seats to suit. These are the valves that come from SWMotorsport, and are now installed in an 88270 head. There was no issue with the collets or any other part of the valves. Now to work out the shim thicknesses...

Thought I might mention that for anyone else looking to get them.