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Location:
Rocklea qld
Registered:
February 2003
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more 18rc-18rg questions
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Fri, 23 July 2004 09:52
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Ok i know the basic differences between a 18rc and 18rg block but my questions are. Is the anydifferences in the way the cranks etc bolt on. I wanna know if i can use a 18rc block and rebuild into a 18rg as i dont wanna strip my rg and be without an engine for a few weeks. Are the cranks the same between rg and rc. Im hoping to use a rc block and pistons and also crank maybe and rebuild it.(this is for turbo thats why the rc pistons)Can anyone see any problems with this. My main problem is the cranks if theres any differences.
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Location:
Brisbane
Registered:
October 2002
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Re: more 18rc-18rg questions
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Fri, 23 July 2004 10:45
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smae bottom ends, but maybe the 18RG has a lighter crank and rods, dunno, but they are fully interchangeable
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Location:
Rocklea qld
Registered:
February 2003
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Re: more 18rc-18rg questions
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Fri, 23 July 2004 11:09
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I knew they were the same but my main concern was if the cranks were different in any way. Im also using the rc block because i have a friend who says he can drill out the blocks to make oil squirt up the pistons to cool them down. Im not sure if he means block or conrods but im using the rc block just incase.
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Location:
Brisbane
Registered:
October 2002
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Re: more 18rc-18rg questions
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Fri, 23 July 2004 11:20
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u drill and tap into the oil galleries and put little nozzles in there and it literally squirts jets of oil on to the back of the piston to cool it
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Location:
Perth
Registered:
May 2003
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Location:
Brisbane
Registered:
July 2004
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Re: more 18rc-18rg questions
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Sat, 24 July 2004 01:04
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You wont be able to use the rc pistons. the rg pistons are fly cut for the valves, the rc pistons are not. hope this helps. rg pistons are difficult to find. i am in the process of rebuilding a rg using a rc block. the only other thing that is different is the dizzy mounting point. the eccentric shaft that operates the oil pump and dizzy from the rg block will be changed as well.
hope this helps
Dan
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Location:
nth ringwood, Victoria
Registered:
August 2002
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Re: more 18rc-18rg questions
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Sat, 24 July 2004 04:21
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also 18r cranks are cast ,18rg cranks are forged so bit of difference also the rods are different 2 by memory better grade of steel
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Location:
Rocklea qld
Registered:
February 2003
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Re: more 18rc-18rg questions
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Sat, 24 July 2004 07:54
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You can use rc pistons. I am using them to lower my compression for turbo. If you are after rg pistons you can buy mine if you dont need them in to much of a hurry. You only cant use rg pistons in a 18rc engine because of the dome head.
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Location:
Rocklea qld
Registered:
February 2003
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Re: more 18rc-18rg questions
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Sat, 24 July 2004 07:55
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The crank was my main concern. I think ill wait and use my rg crank just incase.
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