Advice on head work

[JD@af]

One of my engine's valve seats has gone once again, and while I have my head open to get that problem addressed, I am going to take the opportunity to put in new valves, valve retainers, and valve springs. However, frankly (how evil for a moderator to admit ignorance about his own car... I cringe and hang my head in shame) I don't know much about my various choices.

I want quality, and I am not afraid to put down some change to get it, particularly with my valve springs. However, I also don't want to pay up the nose for top notch parts, the full capabilities of which I may never push my car hard enough to utilize (for example, I know there are 14,000-rpm valve springs available for Honda B series engines - my engine will never see much above 8,000 rpms, if ever). My friend has recommended getting Ferra valves, retainers, and springs. However, since I know nothing about this company, I am hesitant about their products.

Anybody know anything they'd like to share that could help me out? My engine, by the way, is a B18C1. Thanks, much obliged,

-JD

[JD@af]

All right, overwhelming response. Let's try this one:

I've found a B16A2 with Endyn 11.8:1 pistons and Crower rods, a head worked for airflow by Endyn, a micropolished crankshaft, a 64 mm throttle body, and other goodies, at a great price (I won't say how great). It's an unbelievable naturally-aspirated motor, but I want to know if I can use it with my JRSC. It has been used with a 150 shot of nitrous, so it can take some abuse.. of course abuse of a different kind than supercharging. Sounds to me like it should have no trouble with a stock JRSC's 6 psi, but I want to upgrade that. Naturally a knock sensor and huge injectors to ensure rich running conditions are a must. But if the extra power I get from the higher compression makes.. say along the lines of 8 psi with stock or around 9:1 compression, I might be happy with this motor. And I can swap it right in for my B18C1, along with compatibility with most of my other upgraded parts.

If anyone can make pistons that can take boost with a 11.8:1 static compression ratio, it's Endyn. Any thoughts on the matter?

Thanks again

[autofan]

What did you say??
You completely lost me..
Let's wait for a tech guru then

[HXMan]

Well, the pistons can undoubtly take 6+ PSI of boost and the high compression. They can take much more then that. Almost all aftermarket forged pistons are nearly indestructable. All you need to do is keep detonation away, and that may be a little hard running a compression that high. Detonation will kill the strongest piston in no time. So I think, that combination could work for you, but some real tuning will be required. A water injector, and some ECU reprogramming seem to be in order here. Or, if you have the money, get a DFI system.

[JD@af]

Ummm.. okay, direct fuel injection?

[HXMan]

Digital Fuel Injection....you know, those fully reprogrammable ECUs sold bt zdyne and hondata.

Totally custom ECU...you program it from the ground up, to run the way you want.

[JD@af]

Oh cool dude. Yeah, that's my plan, to get a Zdyne. I'm actually trying to find info to weigh the pluses and minuses of custom "super" ECU's like those made by ZDyne and Hondata versus keeping your stock ECU, but using a cartech FMU with a J&S safeguard, and perhaps other stuff like a RRFPR (rising rate fuel pressure regulator). But I have not found nor heard much to this end yet.

[TheMan5952]

I think you should reduce the CR lower, 11.8:1 is too much for a FI engine. Try getting it to 9.5:1 or 9.0:1. Sounds good do, get that shit.:bandit:

[JD@af]

Well, this plan has fallen through, so it's kind of a moot point now anyway, but, NO, this is not too high. If the pistons, cylinder head, etc. are designed properly to avoid hotspots and obtain the proper combustion rates, the combustion temperatures are "non-fatal" for the engine. Endyn's approach to conventional engineering has successfully torn the pages out of many an engineering book. Indeed, Endyn has run motors with compression ratios on the order of 23:1.

If you really want to blow your mind, follow this link, and read:
http://www.theoldone.com/articles/

In particular, I recommend The Soft Head 1999:
http://www.theoldone.com/articles/The_Soft_Head_1999/

[HXMan]

I have read lots of TOO's stuff already. He is one smart guy!