punkindrublic

i'm just curious i was thinking about this in school the other day... say you take a b20 block.. and bore it out so that it would effectively be 2.2L, then instead of a b20 crank. you put in a gsr or a 1.8L crank... would that make the b20 able to rev higher if you were to put on a b16 head??

cause that would keep it at 2L and shorten the stroke a bit?

or say your really crazy and bored a b20 out to 2.4L and used sleeves or something to strengthen the block then dropped a b16 crank... would that be a rev-able motor??

bbarbulo

iTrader: (2)

There are better ways to make 2 liters. How much money do you have? endyn revved their B20 to just over 10,000 rpm before the piston and valve met each other with disasterous results. They did it for R&D purposes to see what it could take. If you have cash in hand or bank account, contact Leitner Performance. He builds some engines. This is not a DIY project.

punkindrublic

oh i'm not doing this i was just curious if it would work.... i suppose it would be smarter and cheaper to just put a stroker kit on a gsr or something

bbarbulo

iTrader: (2)

that is correct

imported_gatherer

but if you put a stroker kit on something your increasing stroke and reducing how high it could rev...

although you will gain low end torque (something that I want in an engine )

Jugglez

You can't just bore out cylinders to whatever you want. the more you bore out the weaker they become. even with a new sleeve job you can only go so much.

your incrreasing displacement through a bigger bore but by using a VTEC crank you're decreasing the stroke and thus decreasing displacement. ask yourself what will you really gain by doing all this? if you're gonna build a frank you should use the b20/b18a/b crankshaft. the longer stroke is what makes the frank potent if done right.

or you could make it even simpler and build up a straight b20 or b18a/b ... no VTEC. you can make alot of torque which is good for daily driving.

punkindrublic

ya thats true... like say you did want to build up a b20.. and wanted to put a vtec head on... is it the connecting rods or the crank that are to weak for the high revs?? or both?? or even something else??

Jugglez

the amount of vibration caused at high rpm puts alot of stress on the bottom end. the lack of cooling features also factor into it. honestly unless oyu have money oozing out of your *** i wouldn't even touch it. don't forget the amount of time and money required to tune it after the motor is running.

punkindrublic

ya i know it would be expensive and i'm not gonna be doing it... just curious... i'm sure you could get a complete h22 swap for less... and it would do more stock probably

R0Y

..... I still want a B20
how much does a B20z go for these days?.....
dam I so want one with a B16 tranny

punkindrublic

wouldn't it be cool to keep the crv transmition too? somehow make room for the drive shafts and such to get to the rear wheels?

imported_gatherer

why your only ever going to put 10% of the power back there ... plus it's an auto....

The G2 Racer

Plus CRV rear axels are so bloodly small it's not funny, those things would break like tooth picks if you tried to off road that thing.
Yes, I've heard people trying to do that, with bad results.

punkindrublic

really? i had no idea about the crv rear ends... hahaha kinda funny though... i guess thats what happens when you take a civic frame and make it an suv... lol

S2K KID

or just buy this directly from spoon

for me and gatherer: lol
F20C engine assembly long block $8,066.68 US yeah right...never gonna buy this unless i buy a 2nd s2k (not gonna happen either)

for you guys:
B16A engine assembly 10000-16A-901 $5,152.00 US
B16B engine assembly 10000-16B-901 $5,152.00 US
B18C 1800cc engine assembly 10000-18C-901 $5,152.00 US

Each weight difference of the parts with which it moves in engine is united with less than 0.1g, a metal also improves burner capacity carefully again t o less than 0.2cc, and a skillful mechanic in the company assembles the parts of all engine again precisely for every one combination correctly. (Compression Ratio 11.3:1)

S2K KID

here is another from JUN


ranges from:
B16A stage 1 200hp $8,400.00 US (continues on stage 2, 3, 4)
B16A stage 4 240hp $11,600
B16B stage 1 210hp $10,800
B16B stage 4 250hp $15,800
B18C stage 1 225hp $10,800
B18C stage 4 250hp $15,800 (why it the price the same at b16b st 4?)

We prepared three kinds of short complete engine, B16A, B16B, and B18C-R. The JUN high camshaft TYPE3 is used for each engine, and processing for demonstrating potential capability to the maximum extent is performed to each part. Four stages are prepared for each engine type. STAGE 1 is the basic composition of short complete engine. It is the specification which can fully enjoy a sport run in a circuit. STAGE 2 A compression ratio and durability are raised using the JUN Super Piston Kit, this stage is based on STAGE1. Both high output and high reliability are achieved by using the JUN pistons. STAGE 3 A compression ratio and durability are raised using the JUN Super Piston Kit and the JUN Super Connecting Rod , this stage is based on STAGE1. Since the weight of parts is light, the high response is realized. In B16B, displacement volume is changed into 1.8L by stroke up. STAGE 4 A stroke rises by using a JUN custom kit. Consequently, the torque of all regions improves and high power is realized. It is the highest specification in B type engine. High performance is realized on all stages. * Short complete engine contains base engine. * Short complete engine does not contain intake manifold, exhaust manifold, distributor, and etc. * The price of the option parts is a special price when carrying out simultaneous purchase with short complete engine. * Since this is the parts for a competition, there is no term of a guarantee. *Shipping cost is not contained. *1 The maximum output and the maximum torque in graph are the reference value tested on condition of our company. This value is not guaranteed. Please check JUN's web-site at www.junauto.co.jp for more information on engine stages, how engine is assembly, and parts that are used by JUN.

S2K KID

and something else for the future

spoon engine kit : It is the kit which sets 77.4mm of a normal stroke to 87.2mm, and is set to 1800cc. The exaggerated size of 81.25mm is also set to overhaul.

S2K KID

im kinda hijacking your thread but giving you things to think about (although some are pricey)

Spoon Ventuli Plate for B16/B18

Venturi Plate : Racing engines are machined with extreme precision and feature filled-in intake ports. This is done to make use of the venturi effect a fundamental of fluid mechanics. Specifically, by smoothing a portion of the intake port and making it narrower, it is possible to increase the speed of the air-fuel mixture. By simply inserting this component between the cylinder head and the intake manifold, it is possible to obtain the optimum port shape for the above-mentioned venturi effect. When the speed of the air-fuel mixture is increased in this way, the efficiency of combustion inside the engine is improved and power increases accordingly.

These are what I found to fit your application the 1993 civic (works with hatch and coupe and sedan)

punkindrublic

i wish i had $15000 US to spend on a motor.... but for that money why not just beef up the internals of an ls or something and put like 20 psi of boost on it... i'm sure you'd have more then 250 hp with that.... homemadeturbo.com there is guy with my current motor (d16z6) making well over 200 hp at the wheels on stock internals... i'm sure the motor wont last long but still that would be like a $2000 job including motor and all that

S2K KID

just giving you something to think about besides to tell you the truth i was bored and i was happy to see the new spoon f20