up the power on the 18r

[liteace]

Steven Horne put a complete set up for sale on the Toymods Facebook page for $1000... with the intake and turbo!

Not on FB and have tried using someone elses account but no luck
any chance of a link?

[o_man_ra23]

I left a link to this page on his ad. He should contact you from here if he still has it (he's been on the Toymods forums for quite some time)

[lilcrash]

here i am

18r turbo.jpg

[liteace]

Very interested! any pics of the exhaust manifold alone and what type of turbo it is?

[lilcrash]

Il get some pics tonight, it's a RAJAY brand California made turbo. The company specializes in aircraft turbos.

[liteace]

PM sent with email and phone

[liteace]

No rush!!!!

[lilcrash]

if this doesnt work add me on facebook and il send them that way

[lilcrash]

http://s1097.photobucket.com/user/courven05/library/

[MorGo]

Well,I repeatorted head,home made intake for 40 mm sidedrafts (and Dellortos),90,5 mm VW (air cooled) pistons and some off the head netted 132 hp/217 Nm with stock 8R cam.And exhaust manifold.Well,2" exhaust though.So much stronger than any stock 18R-G (real dynoed;not some Toyota's SAE Gross numbers at the time)
Bigger valves easily from some Mercedes (do not remember what) and at least Webcam offers performance grinds so I don't see any reason why some 150-160 hp shouldn't be achieved.8/18R in my opinion is way better engine than some Ford OHC;all it lack is the fanatic support the OHC have..
But bash it all you want;if you don't know what you are doing you never realize the potential and join the chorus "it's crap engine worth nothing!"

[MorGo]

Just to add:the 18R-C the "C" stands for "California" emissions engine and that differ (mechanically) by machined open chamber on the head.Lower compression and overall poor chamber desing (can't understand how it could be lower emission than proper standard one.. probably just for lower compression).So stay away from those engines (no idea what idiotic was made to ignition curve and carb tune..)
Having a 11:1 compression in 18R vs. 18R-G.. In 8/18R it's quite easy just by milling the head and block.In 18R-G you need big dome and then then the combustion chamber resembles orange peel.. Not good for combustion (and power),heavy piston,deep valve cutouts (high piston surface area=high heat to piston)
With flat-top pistons and turbo it's great but NA use I would build a 8/18R.Sure,you can make power with 18R-G but it's expensive and not efficient (considering what the head flow)

Oh yeah,I port heads for living so I might be biased..

[timbosaurus]

You are right, the 18r isn't that much of a bad thing, but the 18r-c is a different story. It's a turd.

Unfortunately the 18r is rare in aus, so when most here talk about the 18r, they are actually talking about the r-c.

I spent some time on an r-c and got nowhere, but my jdm Celica has the 18r and is quite strong from the factory.

[liteace]

what are the major differences between the R and R-C apart from different port quality, cam and valve sizes?

Im sure with a clean up of the ports and what MorGo mentioned the all cast iron 8 valver will kill and 18rg for usable torque

[liteace]

http://s1097.photobucket.com/user/courven05/library/

Thank you for the pictures, unfortunately I will have to pass as Ive decided to go blow through with intercooler, efi etc.
Again thank you for the pics

[o_man_ra23]

The 18R-C has an open chamber in the head to lower the compression. Can't just fill it to get the closed chamber of the 18R counterpart (you would have to mill a buttload off the face of the head to get the compression up in an R-C)

The R-G head design isn't that bad really. Bit of a clean up with some emery paper, and its smooth as. Similar in design to what Chrysler used to make a buttload more go than the Fords/Chevs of the time, and it is the basis for the design of modern heads, so they were on the right path. Another thing the R-G had up its sleeve was motorcycle head design, so was good for more revs, just need to get the fuel and cams up to it.

Any sort of performance is going to cost you money, its just what do you have at your disposal (what can you do yourself as well), and how far do you want to go? The 18R-G has a lot more potential than its single cam siblings when you start needing large amounts of air flow and high revs.