One of my guy's CRX broke down, so he's willing to "donate" it to us to build as a project. We talked and decided on an All Motor Drag car. I believe it's a 90 DX or something like that, the only thing I know is that it's an automatic. But that doesn't matter since we're swapping everything out. This weekend we're going to strip it out and clean it up down to the bare bones!

He already has a JDM B16, waiting to drop in...but since he's getting a new car, he's giving us the motor too! Talk about a friend! So I was thinking of dropping in a B20b and using the B16 head. Now my questions:

#1. Since this is a track car, I want to push the compression to 12.5:1, or higher. We have access to race gas, so that won't be a problem. What pistons will give me that compression ratio, with a B20b/B16 head? I don't think we're going to mill the head or deck the block or anything. Just keeping it simple and only machine what's necessary to fit the B16 head.

#2. Can the stock B20b rods handle this kind of compression?

#3. Since it's an automatic, whatelse do we need to swap it to manual? I guess we can just find a junk 5speed CRX and steal all the manual components...it should all bolt up, correct?

#4. What transmission would you recommend for this all motor monster?

Thanx for any help or suggestions!

 

if its going to be a track car and all motor, why not build up an H22A...

 

no H22!!!! even CRVTEC's are starting to show bad signs. stroke the B16 with crower's 2 litre kit, and top it off with some of their drag cams. yes.

 

I think we'll try and work with what we got now. I believe a B20/VTEC will be just as quick. Plus there will be less reliablity issues with the B series, as opposed to a big block H22. I've heard many EF/EG H22a hybrids breaking axles due to poor placement. But I guess it's all speculation until I can try it for myself.

 

yeah right, the crower stroker kits don't last for more than 20 passes. the kit is horribly destructive and lacks longevity. you would be better off with something with gobs of displacement. the crvtec won't last unless you properly prep it for hi rpm. like rods/pistons, and even resleeving it. it may last for a while but you still have to think this out before dropping cash just to spend more money because, it wasn't done right the first time.

 

1) The JDM B16A pistons should give you the 12.5:1 CR. Here is a nice compression calculator for you to use. http://www.c-speedracing.com/howto/c.../compcalc.html

2) Well, you SHOULD change out the rods, if you want to do it right the first time..But that one is up to you.

3) Dunno..For the swap, you'll need different components than what would come with a manual CRX. (integra linkage, etc).

4) Transmission? Any of the 4.400 trannies (VTEC Del Sol, ITR, GSR) should work well for your use.

 

YOu can go with RS motorworks Deckplate using the Prelude crank.
Who said race cars are supposed to be reliable?
Race engines are built for A season
not FOUR SEASONS

 

Thanx for the input guys!

As much as I would love to get the stroker kit, or get the deckplate...I'd like to keep this relatively simple and within a budget. It's a project that me and my guys can work on during the weekends. If I had a shop, I would definitely do more wild things...but it's just a learning project for us.

 

Civic type R pistons, umm no, wont fit, B20 bore is bigger.

So, lets say that you have in your possession right now the B20 block and the B16A head, yes, put the B16 head on the B20, macine the combustion chambers to 84.5 mm and use .5 mm oversized valves, with an all motor race car, spend your money in the head work. get a good port job and dont polish the intake tract. If you can afford it, get some Jun or Toda cams. if not type r cams are a nice trade off. Of course, since the car wont be drivene all the time and logevity isnt an issue since it is a drag car, you can always have some reground cams to your own specs from web, but that will requre alot of thinking and math and research of LSA and flank angle, lift and duration, etc.etc.etc. As far as the pistons go, take a look at the new lightweight rollerwaves, they look like a good choice to me, and rods, yes, the wa to make an all motor car fast is to extend the RPM band, lighter rods is the answer, it is well worth the money. Always blalnce and polish the crank on any engine build and make sure to replace all the gaskets and oil pump. The CTR harmonic balancer and an electric water pump are good cost efficent mods also. If you have race gas, then go ape **** on the compressiojn ratio, hell, nake it 13.5-14:1, why not, ifg you invest in a AEM or DFI 7.0 you will have no trouble, keep in mind that no race car is an overnight build up, so it will take some time and money, but it is a good idea to spend the money now and get it out of the way.

 

Umm, I dont think that any of the trannys what you listed will work, a CRX is a calbe tranny operation there, CTR, ITR, GSR del Sol VTEC, are all hyudraulic trannys, I say go with the older B16 cable units

and for linkage and motor mounts, place racing is the way to go.

 

ys1....has lsd

 

Way to put it riceboy! Simple but effective.

I'll have to discuss it with the group and see what we can come up with...but thanx for the ideas and suggestions!

 

I going w/a B20/VTEC setup on my N/A Drag Car. If I were you I would do the same, but in your case I would use the GSR head instead of the B16. Also I would go w/14:5:1 Endyn pistons and Eagle rods and then from there get some race cams as in some Skunk2 Stage 2 camshafts, some cams, and in your opinion use a Skunk 2 manifold, JG Edlebrock, or even Type R, then last get a good Header as in Hytech if you have the money if not just use a JG header w/optional race B pipe. As for the tranny I would use the GSR or B16 just choose which you like best.Good Luck

 

I have a type r in my rex with type r tranny so I made it hydro
running jun stage 3 cams , spoon head gasket
200@ wheels
soon more mods hopefuly 210@ wheels
go JE high compression pistons or wiseco
you shud go B20 and change the rods and pistons you shud be fine go to crvtec.com
alot of info
good luck

 

um those have different bore than the b20.

 

Also, look into flat back sided valves, they are offered by Endyn and Skunk 2, also, before you rush into a cam purchase, make sure to think through exactly what your trying to achieve.

 

i have heard that a lot of cr vtecs are blowing up because they lack the oiling capabilities up in the rpm's. i do not have any experience with crower's stroker kit, but i have a friend running their 402 cam design in his B16 hatch, lots of fun. another stroker kit possibility is the TODA kit, very choice. you might even consider vtec killers if this car will never see the street.

 

#1. Since this is a track car, I want to push the compression to 12.5:1, or higher. We have access to race gas, so that won't be a problem. What pistons will give me that compression ratio, with a B20b/B16 head? I don't think we're going to mill the head or deck the block or anything. Just keeping it simple and only machine what's necessary to fit the B16 head.

I generally rebuild B20b and Z blocks for people with the Endyn 84.5mm pistons and Eagle Rods, they work even with the 81mm chamber froma dohc vtec head. Incredible results.

#2. Can the stock B20b rods handle this kind of compression?

Only if you find a stock 84mm piston which uses press-in wristpins (as opposed to floating pin which most aftermarket rods use with aftermarket pistons).

#3. Since it's an automatic, whatelse do we need to swap it to manual? I guess we can just find a junk 5speed CRX and steal all the manual components...it should all bolt up, correct?

any 86-93 integra or 85-91 CRX 5spd ... if you wanna get ballzy, convert it to hydraulic from 92+ civic/integra, etc.

#4. What transmission would you recommend for this all motor monster?

my race CRX has the YS1 from Japan or you can get the YS1 from 92-93 GSR, in here you can implant Type R gearing and JDM final drive to these casings.


here's a pic of my race CRX to show how you would want to set everything up:


Greg

 

Nice Drag Car it's looking good. I hope I get mine done pretty soon. What setup are you running?

 

nice car greg. im droolin over it.

 

those itbs look mean as hell.......

 

thanks, yeah it took me about 3 yrs and quite a bit of $$$ to get done. I'm using the Toda Racing ITBs and Killer cams with HyTech header.


Greg

 

you have any more pictures? It looks very similar to my car.

 

sure, here are some older ones, I have more just havent uploaded them yet:






Greg