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

[Steve M]

Those top gun leads look just like the eagle leads.
The not fitting issue can easily be solved by sliding the dust covers down the lead until they contact the tappet cover.
My brother has been using that design and they've been fine other than the metal clip coming off every now an then.
Some well placed lead clips also make them look quite organised.

[Sagluren]

i have some ngk leads, fitted beautifully.

cheers

[Steve M]

I recently got some NGK ones too, they look alright.

[Little_Rolla]

got my 18RGU delivered today...
Seems pretty clean,Also has the yamaha head on it 1111-88250 (i think).
has a clunk when i turn it over, so i took the tappet cover off and the timing chain gets tight, then clunks and slops out... then it tightens again.. would this be a tensioner problem? there is some marks to show the chain has hit the tappet cover.

Going to pull head and timing cover off to get a closer look and make sure no valves have kissed the pistons. and to replace the HG to be safe.

and do i pull the head off first then the timing cover? and what pattern do i loosen the headbolts at?

Regards
Dan

[old_school_jap1]

copy of an 18rg manual; http://members.iinet.com.au/~stepho/manuals/R/

[Little_Rolla]

ahh cheers mate

[Javal]

ahh cheers mate

Some of those timing cover bolts can really hide from you too, especially if your motor is a dirty pig like mine.

[Little_Rolla]

its rather clean, must have been rebuild or atleast freshend up withing last 12 months, engine block is a nice blue, new HD clutch,

previous owner said it backfired out carbs and they caught fire. i seen the car and yeah all the fuel hoses, clutch cylinder ect where melted.. im guessing the warn timing chain jumped a tooth or two which cause timing to go out and bang... im hoping the valves havnt hit the pistons

Ahhwell, all fun and games

[o_man_ra23]

The NGK leads fit well for me. Anyone useing anything other than TRD or NGK needs to have another look IMHO.

[roadkill]

its rather clean, must have been rebuild or atleast freshend up withing last 12 months, engine block is a nice blue, new HD clutch,

previous owner said it backfired out carbs and they caught fire. i seen the car and yeah all the fuel hoses, clutch cylinder ect where melted.. im guessing the warn timing chain jumped a tooth or two which cause timing to go out and bang... im hoping the valves havnt hit the pistons

Ahhwell, all fun and games

Hi,

not uncommon for them to fire back through carbs, thats often to do with cams espesh if they are big aftermarket ones. All 18rgs i've ever owned have fired back through the carbs occasionly. meh. If the chain has jumped a gear then the engine will be fubar-ed. I genuinely believe that the chain cannot jump over, well i did till it happened to my mates 18rg. High revs doing a burnout and oil pressure dropped, lost tension in chain and wham bam thank you maam. 7 valves bent like bananas and the 8th on not too straight either. Somehow he managed to limp it home.

Alternatively too the carbies could have been really farked too, It shouldn't spit out that much fuel. If it spits any fuel out under normal operation it'll get sucked back in next revolution of the engine.

Compression test ftw before removing the head. If no compression then pull apart, if it has good compression then get some carbies and give it a go!

bEn

[MnToyGuy]

Hey all,

Just picked up a 18RG recently and got a few Q's

motor has been sitting in shed for about 9 months (thats when it was last run)
Is there anything i HAVE to replace before using it? i know ive had a few 4k engines have the water pump bearings die if sat for a while.

2nd, it came with no carbs but has the manifold. will 40MM DCOE webers fit? quick google has led me to belive they are same as the solex and minkuni (spelling) carbs bolt pattern wise.

3rd, if carbs do fit, whats a base jet size to start at? the carbs where off my 1.8L golf Engine.

now all i gotta do is find a car to put it in haha,

Regards
Dan

Everything you wanted to know about jetting for the RG:

http://www.rmcarburetors.net/Tuning%20Tips.htm

[Little_Rolla]

Cheers mate,

Have decided to go EFI on this setup. and its going in a RA40 celica

Have got the head off and its on its way to get a skim, manifold sides skimmed, cleaned, crack test ect ect.

Timing cover will be coming off once i got my engine stand. then the Timing gear will be replaced. anything else worth doing while its stripped half down? it has a new clutch, flywheel is good,

Cheers

[Sagluren]

sump gasket, i always had trouble when i was replacing them in the car.

cheers

[sheepers]

can anyone tell me what this head is off???

[river]

Hi,

222 head is a 2T-G head, unless I am very much mistaken.

seeyuzz
river