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4DaDrift
Forums Junkie

Location:
Sydney
Registered:
May 2003

18rg head on 22r block	Mon, 22 August 2005 15:45

is this possible and if so with what , if any mods to either the head and/or engine ? edit:speeling [Updated on: Mon, 22 August 2005 15:46] [Report message to a moderator]

Mr DOHC
Forums Junkie

Location:
Brisbane
Registered:
October 2002

Re: 18rg head on 22r block	Mon, 22 August 2005 20:14

wont work, just put the 22R crank and 16R rods in the 18RG block to stroke it [Report message to a moderator]

4DaDrift
Forums Junkie

Location:
Sydney
Registered:
May 2003

Re: 18rg head on 22r block	Tue, 23 August 2005 03:51

are the long and short 22r cranks the same ? 16 or 18 rods ? didnt know here was a 16r woudl 18rg cranks be suffice of they have to be 18r ? any idea what this woud stroke the engine out to ? ive also heard theres different spec twincam heads whats teh diff between them al and which suits what ? [Updated on: Tue, 23 August 2005 03:52] [Report message to a moderator]

tricky
Regular

Location:
Canberra
Registered:
July 2005

Re: 18rg head on 22r block	Tue, 23 August 2005 04:28

Please don't stroke it!! It removes all revving characteristics of the engine, and basically you have a 22R with a flowing head. I know for sure that I prefer driving my 18RG RA23 to my Dad's 22R 'lux. If u wanna larger capacity RG, you can bore it out to 2.2L (92mm I think) with no ill effects. The problem with this, however, is you need new, probably custom pistons ($$$). If you stroke it, it will be 2.4L, will have boatloads of low end torque, but it won't be revvy like an RG. PS i dunno what your appplication is, and if it's in a hilux, the stroked option would be significantly better. Keep us posted on your progress! [Report message to a moderator]

4DaDrift
Forums Junkie

Location:
Sydney
Registered:
May 2003

Re: 18rg head on 22r block	Tue, 23 August 2005 04:34

actually for fathers corona wagon so require the torque yet also desire it to rev am i correct in assumign the reason it wont rev is due to the stroke beign significantly different to the bore and that this coudl be corrected by boring the engine as well as usingt he crank to stroke effectivelly creating something thats 2.6l + with twin cam in a 4 cylinder ?edit should also ask if the reving capabilites are due to the 22r crank beign significantly heavier ? [Updated on: Tue, 23 August 2005 04:35] [Report message to a moderator]

Norbie
Forums Junkie

Location:
Brisbane
Registered:
May 2002

Re: 18rg head on 22r block	Tue, 23 August 2005 04:41

Longer stroke means higher piston speeds. Shorter rods means higher side-loading on the pistons. Both are bad news for revs. Solution: 18R-G with SC14 blower. Revs nicely AND has boatloads of torque. [Report message to a moderator]

tricky
Regular

Location:
Canberra
Registered:
July 2005

Re: 18rg head on 22r block	Tue, 23 August 2005 08:45

yep, you def want torque, but a stroked RG will rev roughly the same as a 22r. Norbie's suggestion holds some serious meat, however! (such plans lead me to beleive it's an omen that my 18RG has a double row crank pulley ) [Report message to a moderator]

Location:
Tamworth
Registered:
August 2004

Re: 18rg head on 22r block	Tue, 23 August 2005 09:44

There different spec twin cam heads. There is many different casting numbers Castings numbers in order from best to worst, in my opinion 88270 88253 88250 these are the best 3 to use. There are many more earlier versions. If u want to use stock cams use the cams from an 88210 or 88230. All of them ca be used on the 18r block. [Report message to a moderator]

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