Just wondering whats the best Compression ratio to work with toda C's, currently running 12:1 around..and spring rates.. I've been reading some article there are various spring rates with Supertech / Ferrea. anyonw can inspire me which one to get? thanks.

 

Your best bet is to run the toda springs with toda cams.

 

http://www.importreview.com/re....html

This test would suggest the same. I'm sure there are others that will work on the market today such as the Rocket Gen IIs....

Put a PCT/CTR piston back in and go. That will give you roughly 12.6:1 CR with a new P73/PR3 head/OEM gasket - since yours has been milled an unspecified amount.

Spend the rest of your money on a good header and tuning.

Figure out what your goals are and then ask your piggybank if they are realistic - readjust to suit.

 

Thanks pat.

I am going back to HK next month. Will get the B16B +0.25mm pistons. Im just concerning if the compression will be "too huge" due to the head been milled. might have some major heat issue with such high compression.

valve train. sigh, might just get the Toda. i was thinking going with a full ferrea valve train. Now might just get ferrea valves. Spoon valves(8in+8ex) cost a whooping USD350 (being quoted) which is very close to Ferrea comp plus's cost.

As of CR being high, also planned to order the Trust 13 roll oil cooler and invest a koyo(or equilvent) radiator.(heat issue never solved)

For a header, currently using a 5Zigen unit. think its good enough. not planned to invest a Toda, FGK or even hytech..


Modified by sinister6 at 8:11 PM 5/4/2006

 

If you don't know how much material was milled off your head, then I wouldn't suggest you get the PCT pistons.

Are you going to clay the motor? What are you using for headstuds?

I'm not sure why you need to get Spoon valves or even consider such crazy parts (350usd for stock valves touched by Spoon?) Put stock valves in and save a bunch of money.

IMHO, too many people are just overbuilding things for the sake of building things....So many variables you haven't considered and if you have, you didn't mention in your post.

I don't get it....

 

becasue stock valve cost 2000HKD for 16 pieces, there is not much of a difference at all.

head, mains going to use ARP. the head is going to machine shop to do some calculation soon. cylinder volume etc, dont have another 18R head handy to compare... so...might as well port and polish in/ex/cylinder dome(or whatever it called)

You know i was trying to go stock to avoid further troubles, but things changes after you disassemble everything and have a lot more information from the block. beside the bottom end is bone stock. everything on the head just driving me nuts. so i say screw it and build the hell out of it until it blown again im going to get a new head

Is a B16A head same as a R head? beside the 'factory so called polished and balanced' .. if i change to all ITR components will it be the same as a R head?


Modified by sinister6 at 11:14 PM 5/4/2006