Ok, im learning slowly on building engines and parts , etc, but here is a summary of my future build (note this if for a race car (road race)).

B16b Motor
Stock Pistons
Stock Crank
Stock Con Rods (Shotpeened)
ARP Rod Bolts
Mugen Head Gasket
Milled Head
Race Port Head
Skunk2 Pro + Cams (stage 2 or 3.. unsure yet)
Skunk2 Valves
Skunk2 Valve Springs
Skunk2 Ti Retainers
Skunk2 IM - Honned
Custom Cold Air Intake
Stock Injectors
AEM Fuel Rail
AEM Pressure Regulator
Upgraded External Fuel pump & filter (-6 lines)
15 gal Fuel Cel with surge tank
Balance Bottom end
Blueprint ?
Field's Vtec Controller
Wideband O2 tuning (maby jumping to hondata unit)

Now the company who is doing the build used to (well still runs) in Grand AM and did the world challenge with a Skunk2 motor. They are telling me to run 12.2-12.5:1 compression. I am looking for power but more so reliablilty alongside the power (the engine will run an enduro once a year and we have the budget to do a build, but not keep rebuilding.).

What do you guys think? What would you change, or not do?

Also what would be the maximum safe amount to mill that head and what would be a recommended amount? (they said on their world challenge motor, it was almost 2mm!).

the next question is we are looking to tune to 100 octane, but what is the max you can run 94 on just "incase" we run out of 100 octane and are stuck.

 

before anyone says different: KEEP IT A 1.6 LITER...


also the pistons are flush with the top of the cylinders, so if you mill the head enough to where it looks like a P72/GSR head the pistons will probly make contact at high RPMs, and deffinately will if you spin a bearing


77.4mm stoke forever

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbohf &raquo;</TD></TR><TR><TD CLASS="quote">


77.4mm stoke forever </TD></TR></TABLE>

eh.... &lt;fart&gt;


i think in that motor for RR-ing i would go for a BC3+, but wait till clean rice says something about the cams.

aboutthe 12.5CR... i say yes go for it but you might want to try something a little different. you may want to go for a flatter honda piston such as a p30 or usdm itr, than take about .020 off the head. that way youll have your CR but wont have as many clearance issues with those shitcan pct pistons.

 

the builder was saying somehting about the pistons, having to machine them a bit so the valve fits, that could be inline to what you are talking about. So what are you suggesting then? how much could I go to keep it safe so there would be no contact at high rpm?


note, we will be most likly putting the rev limiter around 9000-9300 rpm


Modified by ^AnDre^ at 5:10 PM 9/8/2006

 

put the rev limiter where it makes power to. thats where cam selection comes in. some cams will make their power right there. some like jun3s will make it at 10,100 haha.

he was talking baout machining the valve pockets down so theres no valve to piston contact. im saying do exactly that, but iwth a nice flat piston like an itr piston. then mill the head to make up the difference. i cant be exact on the math becuase the b16b crank and rods are way way odd considering its a 1.6l motor with the same deck height as a gsr/ls/itr

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xDEFTONESx &raquo;</TD></TR><TR><TD CLASS="quote"> i cant be exact on the math becuase the b16b crank and rods are way way odd considering its a 1.6l motor with the same deck height as a gsr/ls/itr
</TD></TR></TABLE>

way too old? what are you trying to say?

 

ok.. so now its a toss up between the added cost of the pistons..... gotta sit on that one...

How often would you say the motor will have to be rebuilt? how many solid hours of racing?

and then im gonna stick with Skunk2 pro+.. but 1 or 2.. cant decide... pro1 make the power from 6-8000 and pro 2 from 8500-9500... hmmm.... what If I go ahead with the milling of the head and go pro1 cams (that would increase some reliablilty no???... it has to be built to endurance specs)