What is the best way outside of bouring out a b18c1 to get more torque? especially to make the torque flat or not die off near high rpm? Turbo is way out of the question.

Ive gonna pick up a b18c1 for our autoXracer, and just looking to put 180 hp at the wheels with good torque numbers, just looking for the "most cost effective" way to do this.

 

89mm crank, or bore it out.

 

id rather not work on the bottom end of the car, just incase we blow a motor (which we are already blown #2) it wont be as expensive to replace. We made the mistake of throwing too much loot in our b18b to build it up now its almost useless. Id rather stay stock block and build up everywhere else where a engine "blowing" won't brake them parts.

 

working on the bottom end won't blow the motor.

working on it and not having it tuned will.

 

u want more tq w/o touching the parts that affect displacement?? Good luck w/ that one. Your best bet is going to be FI or n20 i guess.

 

geez... gotta spell everything out here or what....

yes I know working on the bottom end dosent blow the motor... But guess what, hard racing blows motors quite often. I am looking for my most cost effective method to increasing hp and torque with a "stock" engine. Therefore, IF and WHEN the motor blows, i didnt spend 3000 us on a engine and 3000 us to build it up (bore it out, con rods, pistons, crank, etc) to have a piston fly through the engine and then have to spend 6000 us again. Instead spend 3000 and maby 2000 on the head so WHEN i blow the motor, all i need to do is replace the bottom end.

again I ask, which gains net the most torque

Increasing TB diamater, full race port head, backcut lightweight valves, Cams (and which cams net the highest torque), header, IM, milling the head, etc.

 

itbs

 

Have you considered a stock b20 bottom end with a gsr head? Add a good header and some quality tuning and you can see around 170-180whp with a good tq curve. All of your power will be below 8000rpm too, so no need to spin it out to long.

Also, a higher final driver will increase tq aswell. It won't actually increase tq output at the flywheel, but at the wheels.

 

what would the quality tuning be?

 

also the car currently has the civic type r cable lsd tranny (b16b).

 

My advice to you is to check out ITBs

Not only does it give you flat toqrue but instant throttle response. They're great for autox and other types of racing. Check out my sig to look into Fuji-racing's IRTBs. You can use your stock fuel rail, injectors and all that. You can also change the size of the velocity stacks if you plan on internal work down the road.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ^AnDre^ &raquo;</TD></TR><TR><TD CLASS="quote">also the car currently has the civic type r cable lsd tranny (b16b).</TD></TR></TABLE>

Is your tranny converted to cable?

and the CTR tranny comes with the 4.4 final drive so if you get the 4.7 ITR FD it will help!!! Your top speed will be reduced to something like 118MPH at about 8000 RPM's but for auto cross this should be fine!

 

81.5mm bore on stock stroke...made 146 wtq

 

n.o.s
$500.00
it wil give you the best # for the price..

 

civic type r trannies are hydraulic not cable so if you have a cable lsd tranny it aint from a civic type r

 

want the most torque out of a motor with stock bottom end? only way is to do a k24 swap