i have a built B16 with 12.5:1 Cp pistons, mugenhead gasket,and flat valves Im affraid im not going to be able to run pump gas.

What do you think?

 

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was that my answer?

 

I ran 12.5 with lots of timing and fully built. blew my motor to pieces in 3k miles
If you go that high, go with a conservative tune. My tune was really aggressive.

 

how much hp did you have ?

what do you think my comp. ratio will end up being?

what s do you consider a mild tune ?


and what about gasoline?


thank you

 

if u run that high of compression , u have to be easy on the timing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by marsvolta &raquo;</TD></TR><TR><TD CLASS="quote">i have a built B16 with 12.5:1 Cp pistons, mugenhead gasket,and flat valves Im affraid im not going to be able to run pump gas.

What do you think?</TD></TR></TABLE>

What kind of gas is available in WA? Are you stuck with 91 octane? Or can you get 92, 93, or 94? It makes a pretty big difference.

 

I was running 93 octane. Never got to run 108 etc. Timing was at 32 degrees when the eagle rods broke. Car ran fine however at 26-28 degrees total advance. It liked air to fuel ratios 13.1- 13.5. Car originally had an ignition system (MSD Digital 6), but the ignition system caused problems. The stock ignition system is all you need on an all motor car. The car made 192 whp, 123 ft-lbs on a Mustang Dyno with ignition problems and 22 degrees of timing. Didn't get to dyno on more timing only ran it on the street. Lost to a Camaro SS on the street with exhaust, cams and bolt ons by only a car from 40-140, so I am guessing it was pretty fast. Well I guess I'll never know, but coming soon with a 2.0 L setup and itb's. If I had to do it over wouldn't pick a b16, just not enough torque.

 

Stuck with 92 in WA.

the cp pistons i have are rated 12.5:1 for a b18c1 does this mean the compression will be lower in my b16 since my rods are shorter?
if so how much lower?

thank you!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by marsvolta &raquo;</TD></TR><TR><TD CLASS="quote">Stuck with 92 in WA.

the cp pistons i have are rated 12.5:1 for a b18c1 does this mean the compression will be lower in my b16 since my rods are shorter?
if so how much lower?

thank you!</TD></TR></TABLE>

You can get 94 octane for 92 octane prices at Cenex stations. There is one in downtown Auburn and few else where. Look for them.

Those CP pistons will give you around 11.2 (off the top of my head) in a B16A with flat-face valves and a thinner headgasket.

When you are ready to get them put in to your shortblock go to Bud's Machine & Engine Shop in Tacoma. They do excellent work! http://www.budsmachine.com/

 

its amazing what those b16s can do without tq

 

what would happen to my compression if i used b18 rods with this set up?

good stuff? or bad stuff?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by marsvolta &raquo;</TD></TR><TR><TD CLASS="quote">what would happen to my compression if i used b18 rods with this set up?

good stuff? or bad stuff?</TD></TR></TABLE>

I honestly don't think you belong building an engine from the kind of questions you are asking here.. heh.. Put the B18 rods on the B16 crank... mount those pistons up and then put them in the block. Tell me how you like em when they sit out of the block an additional 4mm. It will be hella sweet man.

Why the heck would you want B18 rods anyways? You trying to muster up some kind of cheap stroker kit? If so, just sell the B16 and go get a B18C1 shortblock instead. You will be happier in the end.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sheepeg3 &raquo;</TD></TR><TR><TD CLASS="quote">if u run that high of compression , u have to be easy on the timing. </TD></TR></TABLE>

Which is kind of defeating the whole purpose of running those levels of compression. Why bump it up to gain hp when you are simply going to pull timing like mad to control detonation and thus huck all your gains right out the window? People need to think before they just slap together some random parts with numbers that "sound" good and then ask questions afterwards.

 

is it ok to run a 13.5:1 CR with 97 or 98 RON fuel?

 

[QUOTE=FairlightRacing]

Those CP pistons will give you around 11.2 (off the top of my head) in a B16A with flat-face valves and a thinner headgasket.

do you know if this is true?

im sticking with the b16 so if you have any good advice id like to hear it thank you