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

[The Witzl]

darn tootin'

also have found a supplier for 18RG valves, i'll be contacting them soon to find out the exact brand, material, sizes available etc....
i bought from them a set of 38.5mm exhaust valves for $70

anyone interested?

[Mr DOHC]

i'll stick with my stainless steel's thanks

[tricky]

Speaking of fuel pumps, I need to upgrade my fuel system for the forthcoming uber-RG. My current setup is a VL high-pressure pump feeding directly from the tank and into the stock fuel line, which worked OK in the past but it doesn't offer protection against surge and probably won't flow enough for the new engine when I crank up the boost.

Anyway, I have a friend who works with stainless steel every day and he's offered to make me a stainless surge tank. My idea is to try mounting an internal Walbro fuel pump inside the surge tank, with the pump hanging off a bracket from the top of the tank, much the same as pumps are mounted in OEM fuel tanks. Then all I have to do is replace the VL pump with a low-pressure lift pump and I'll have a nice neat high-capacity surge-resistant fuel system.

Anyway, if my internal-pump surge tank idea works out OK I might get a few of them fabricated. Would anyone else be interested in such a device? *looks at Karl*

Hey, norbie. I may well be interested. Heck, if you didn't get extras fabricated, I'd just be going through the whole prototype phase myself in about a year when I switch over to megasquirt + quads.

Karl, did you track down an EFI thermo housing? Yours is significantly more shiny than the one I'm gonna send you!

As far as valves are concerned, I recently sourced some cheap exhaust valves. They are Shin Ichi, 38.5mm, PN AK5520. They were supposed to cost $24 each, but they ended up being significantly cheaper (a bit of a stuff up from the machinist!). Oh, and Witzl, I saw those valves on e-bay. I was gonna bid on them when I realised one of my valves was cracked, but I saw a the name of a bidder I thought was conspicuously toymodsy.Besides, I got my four valves for a bit less than $40! I've seen 18RG valves come up on e-bay at least half a dozen times, so there is probably someone bringing them in from Japan.

My only problem with my new valves was that the lash was a PITA to get right. The seats were cut before they were installed, so one would envisage that the shims would need to be ground... Instead the clearances grew to 0.6 - 1.0mm. I don't think they were made with particularly tight manufacturing tolerances.

[The Witzl]

tricky,
mate i still want that efi thermostat housing please. The shiny one there is cracked around the water temp gauge sensor and may very well leak when used for the first time

Those valves i got are indeed the ebay ones, which are actually from Fours n More in SA. Not sure on brand though...

Mr DOHC,
thats a nice story, hows it going for you?


Now.... TRD Part No. Teasers!!

TRD High volume oil pump, 18R-G -> 15100-RA051
TRD rod bolts, 18R-G -> 13265-RA051

will post more soon

[SRacin]

woohoo cool! So when we going to see the pdf scanned version?

[TurboRA28]

I might have a 18rg efi thermostat housing if needed.. I've got something under the house and could never work out what it was from.. Looks very similar to your pic.

[Steve M]

Karl,
Are TRD high volume oil pumps still available?

I just checked and that part number does not come up in the global list anymore.
2M, 3M and 4M engines use the same oil pump gear but they are no longer available either.

If anyone can find a TRD oil pump somewhere, count me in, I want one.

TRD valves part numbers have the RA051 suffix for intake and RA052 for exhaust.

[The Witzl]

i've just sent a list of the more interesting TRD parts to Mr Revhead in NZ to see what he can dig up for us. Will be interesting to see if anything is available.... but i doubt it will be


Whilst on the topic of Mr Revhead, i've just ordered from him a whole bunch of timing chain tensioners and guides. Not too bad prices if you need the stuff, but still pricey. Damn old tractor engines!

Here is the list of parts, and curent prices i was quoted (NZ$)

13559-88270 - $154 - no.2 chain guide, in. side

13563-88250 - $124 - no.2 chain guide, ex. side

13540-33014 - $40 - No.1 chain tensioner

13561-34010 - $42 - No.1 chain guide

13652-88280 - $49 - no.2 Top chain guide (between cams)

13550-88270 - $175 - No.2 Chain tentioner

Total = NZ$584.00

NOTE: please dont take these prices as reference. They are what i was personally quoted and i dont know if thats what he would normally do.

[Mr DOHC]

Mr DOHC,
thats a nice story, hows it going for you?

great

no replacing valves after 20,000k for me

[The Witzl]

you shouldnt have to replace valves after 20,000k's unless there is something seriously wrong with the way the engine is tuned / set up i would have thought!!

stay tuned kids... i have soo much info to add to this thread, just need to collate it all and write it up....

[Mr DOHC]

yeh i know

[h3ff44]

well i know absolutly nothing about these engines but i do know that my old man had one in is old round head ligt corona... and would pill 0-100 in just under 7 secs.
he said he had pace makers that he had modified on the first cyclinder as it wasnt that great.. he worked out the tuned length of what it should be.

he also had a good well tuned set of webers... ive tried to get info outa him but he gets all grumpy about it when i ask..
i was hoping he may have a book somewhere with calculations of the tuned length exhaust etc... but havent come across it yet.

kinda pointless post but i thought i would share it.

what kinda times hae other people managed to pull with these motors?

[jeffro ra28]

Karl, does Mr Revhead sell these 18rg items regularly?

[Steve M]

I don't see any timing chain tensioners (that one bolt swinging thing) on that list Karl, is he not able to source them?

I've heard that a guy in Adelaide is getting some custom 18RG guides made up, full set, 100 items of each guide.
I will keep an ear to the group and a wallet full of cash and I'll see how I go. I only need the timing chain tensioner slipper, or, slipper C as it is sometimes called. I want two brand new ones.

[Steve M]

Oh, hang on, does Mr Revhead refer to the timing chain tensioner slipper as the no.2 chain damper intake side? The part number matches and the 18RGEUs did use a slightly different design so the generation number is right too.

If this is correct and your getting some Karl, put my name down for two of those suckers.

Jeffro, did you read this post? If we can get them through this guy we won't have to go to the US for them and it will cost less.

[The Witzl]

Guys, i'll have a chat to Mr Revhead today.... i've already got myself and Norbie down for some timing chain parts, but it's not really worth group buying with the new under $1000 customs duty exemption.

Im pretty sure you can each individually sort it out with him directly, will let you know during the day.


Steve
i picked out these p/n's myself from an online EPC that is no longer available... damn russians! i picked an RA63 carina from memory with 18rgeu.

..... and just cos i love you so much steve, i drew you a picture explaining my terminologies....

[Mr DOHC]

ah, the old WSoD

[jeffro ra28]

I have an adobe file of all toyota t and r series engine part numbers and also all 1st gen celica part numbers.

Send $5 and i can make you a CD copy of it.

[Steve M]

Steve
i picked out these p/n's myself from an online EPC that is no longer available... damn russians! i picked an RA63 carina from memory with 18rgeu.

..... and just cos i love you so much steve, i drew you a picture explaining my terminologies....

Feeling the love, cheers Karl for the picture, but the descriptions don't match those with the part numbers. This is stretching my tiny little brain.

basically,

13559-88270 - $154 - no.2 chain guide, in. side

= HINGED GUIDE, yes?

[SRacin]

I also have the hard back version of the ta22 toyota genuine parts catalgoue, factory repair manuals (chassis/engine/body). xe1x and xe2x factory parts cataglogue. RT40 body/chassis/engine/transmisson. xe7x collision repair guide (basicaly body/,mechanical part numbers only and critical dimensions. plus a few other odds and ends.