Ok guys, my buddy has decided on the b20z w/ b16a head for his buildup...

He doesn't know a lot about this, so I'm helping him. Goal is to run mid 12's NA... But he will also auto-x and road race with this car. This will go into a '88 crx si. And he plans to gut the rear to help with weight...

He found b20z's for ~$850

He found b16a's (SIRII) for ~$1200-~$2000

He is thinking about buying one of each and sending the b20 block out to have oil squirters and vtec lines put into it...

I'm giving him my old itr cams and valve springs...

He's undecided on the tranny; either y21 or ys1... He wants lsd for sure, but is uncertain whether to convert to hydro tranny...

He's also found complete b20 vtec longblocks that have already been built with braided oil lines and everything.

What do you guys think? Is he headed in the right direction?

If it makes sense, post up a shopping list for the budget minded.

Thanks!

 

Sounds good. and I like to see friends giving parts out like that. very helpful

 

Tell him to ask about an automatic B16a. He should be able to get one much cheaper, and the weaker cam profiles wont make a difference anyhow (if he's gonna use ur springs, etc). That should save him a couple of bucks.

 

Here are the basics I think you will need:

B20z block (you say ~$850)
1st gen b16 head (you can buy the whole longblock for ~$450, sell block)
p28 ecu chipped to DOHC (~$200)
Full set of top end gaskets (~$170)
lines and fittings (~$100)

Don't know if the addition of your ITR cams will put him in the 12's but this is you basic setup.

Also with this I would not rev past 7500-7600 for these reasons:
1)B20 pistons are heavier than LS pistons but are supported by the same rods
2)Using the higher lift ITR cams there is very little room for error(valve float) because the valves will hit the pistons
3)The 1.54 rod ratio that is unsupported by a girdle like the GSR.

 

"He's also found complete b20 vtec longblocks that have already been built with braided oil lines and everything."

Does the shop that sells these have a website?

 

If its a road race car..he better reinforce that bottom end or things will go pop!

 

just get a B16 longblock and B20 longblock, sell the head and block, u will then have a B20 vtec ready to be set up for only like $800

 

sup HX_GUY!, i was wondering what mods do you have on your b20z non vtec that made you run a high 13 sec 1/4 mile???...thanx

 

Sorry for the delay....

B20Z2 Engine
B18C1 Transmission
Crower 62404 cams
Crower Dual Valve Springs
Crower Titanium Retainers
Skunk2 Cam Gears (tuned at +4,-4)
Skunk2 Intake Manifold
3" Daimeter Cold Air Intake
JDM ITR header
Tanabe G-Power Exhaust
2.5" Test Pipe

ACT HDSS Clutch
Clutchmasters 7.5 LB Flywheel

Apex'I S-AFC
B&M FPR

 

how and who can put oil squirters in the block. im also thinking about making a b20 and would like to know who can put the oil squirters in. thanks

 

im thinking teh same way..i ganna install my b20z like next week..includes skunk 2 manifold, street clutch, ls ecu, and obd2 to obd1 jumper... i duno if i should do all motor with the non vtec head...or turbo with non vtec...or get a b16 head (b20vtec)..i hear many problems about the vtec head though.. so if u put a GSR squirter it would solve the problem...iknoe the vtec head would make the b20 a lot faster...but i dont want to hassle with the problems like leakage of oil...what should i do>>??
thanx...jeff

 

hey where did your friend get the b20z block? is that the whole engine for $850
im looking for one....

 

try jdmengines.com, soko.com, or maybe (for the best service) importautosalvage.com...

 

850 for a b20 long block is what they go for. i have a b16 longblock which i can part with for 400 plus shipping if your not in So Cal. tranny, i owuld go with an LS with the R final drive. make sure the rods are of good quality since they will have to be custom made.

 

Funny no one is mentioning pistons. Pistons are #1 if you're going VTEC since the B20 pistons wont have the proper clearance with a VTEC head.

 

What would be the gear ratio of an LS with ITR FD?


[Modified by jonsteR, 10:50 PM 10/22/2001]