F.A.Q.    Register    Login    Home Members    Search

Toymods » Tech & Conversions » 18RG block with unknown Pistons(with close up pics) Show: Today's Posts  :: Show Polls  Email to friend

Author	Topic
Steve M Forums Junkie Location: Adelaide Registered: June 2003	Re: 18RG block with unknown Pistons(with close up pics) Fri, 26 August 2005 08:22 88250 stamped cams would definately be more suited to these pistons. 88231 or earlier would also be better than 88251 or later. With the compresion that you have, the issue is fuel type. Using 98ron fuel, you'd probably have to have 310 degree or more cams, just to lose the compression. The 12.5:1 compression pistons I've got were used with methanol and mechanical injection in a sprint car. The only TRD pistons I've seen had "dome" shaped tops on them, as do the Arias 12.5s. I've never seen 18RG pistons that have such square sides as yours, they must get quite close to the sides of teh conbustion chamber. I've only seen forged ones that have more of a tennis ball shape dome. JP engineering in SA make some that are squarer, I think, I've not seen them in a while, but they are cast. If you are able to measure the volume (accounting for valve pit volume below block height) we should ba able to help you out with a rough compression ratio. [Report message to a moderator]

	Subject	Poster	Date
	18RG block with unknown Pistons(with close up pics)	wolverine	Fri, 12 August 2005 10:20
	Re: 18RG block with unknown Pistons	munki	Fri, 12 August 2005 11:30
	Re: 18RG block with unknown Pistons	bbaacchhyy	Fri, 12 August 2005 11:43
	Re: 18RG block with unknown Pistons	wolverine	Fri, 12 August 2005 11:58
	Re: 18RG block with unknown Pistons	earlyrolla	Fri, 12 August 2005 12:33
	Re: 18RG block with unknown Pistons	THE WITZL	Sat, 13 August 2005 05:13
	Re: 18RG block with unknown Pistons	Mr DOHC	Sat, 13 August 2005 07:06
	Re: 18RG block with unknown Pistons	Steve M	Sun, 14 August 2005 01:09
	Re: 18RG block with unknown Pistons	wolverine	Mon, 22 August 2005 10:08
	Re: 18RG block with unknown Pistons	Mr DOHC	Mon, 22 August 2005 11:35
	Re: 18RG block with unknown Pistons(with close up pics)	wolverine	Mon, 22 August 2005 11:48
	Re: 18RG block with unknown Pistons(with close up pics)	Mr DOHC	Mon, 22 August 2005 12:01
	Re: 18RG block with unknown Pistons(with close up pics)	wolverine	Mon, 22 August 2005 12:09
	Re: 18RG block with unknown Pistons(with close up pics)	andrewvibert	Mon, 22 August 2005 22:42
	Re: 18RG block with unknown Pistons(with close up pics)	wolverine	Thu, 25 August 2005 07:51
	Re: 18RG block with unknown Pistons(with close up pics)	YelloRolla	Thu, 25 August 2005 10:11
	Re: 18RG block with unknown Pistons(with close up pics)	wolverine	Thu, 25 August 2005 20:28
	Re: 18RG block with unknown Pistons(with close up pics)	Steve M	Fri, 26 August 2005 08:22

Previous Topic:	Project ST162 - Take 2
Next Topic:	Koni's on MA61

Powered by: FUDforum 2.3.8
Copyright ©2001-2003 Advanced Internet Designs Inc.