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Old 11-14-2017, 07:51 AM   #1
tyrefryrevolvo
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Post b23 build suggestions.

Allright guys , I have an 84' 242DL back in cali waiting for me with an m46 and it has 180k on the clock so barely broke in. From what i understand it is a b23 engine. I would like to build it from the ground up with a turbo and all the correct supporting mods to at least 400hp I would really appreciate some direction and some options and reccomendations from the the guys that have been working with these engines for years allready and know what exactly to look out for . When i get home from deployment i plan on diving right into it.
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Old 11-14-2017, 09:45 AM   #2
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all you need to do is search search search...
then take out your wallet
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Old 11-14-2017, 09:47 AM   #3
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and this might help;

http://forums.turbobricks.com/showthread.php?t=249553
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Old 11-14-2017, 10:56 AM   #4
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When are you back?
Ho much you budgeting for?
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Old 11-14-2017, 04:06 PM   #5
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Quote:
Originally Posted by tyrefryrevolvo View Post
Allright guys , I have an 84' 242DL back in cali waiting for me with an m46 and it has 180k on the clock so barely broke in. From what i understand it is a b23 engine. I would like to build it from the ground up with a turbo and all the correct supporting mods to at least 400hp I would really appreciate some direction and some options and reccomendations from the the guys that have been working with these engines for years allready and know what exactly to look out for . When i get home from deployment i plan on diving right into it.
What I did to get 352whp from a b21, just to show what can be done without spending a ****load of cash:

Stock 7,5:1 compression shortblock (b21et, same as us b21ft)
Stock 398 k-jet head, stock valves but stiffer springs
Stock v-camshaft timed straight up
stock k-jet intake manifold
stock 90+ manifold (flange opened up to t3 size)
stock headgasket
holset hy35cw
3" exhaust with a single muffler
siemens deka 63lb injectors mounted in k-jet holes in head
dw300 intank pump
dodge 4bar fpr
generic ebay ic
accel ultracoil, stock dizzy, some generic accel plugwires, bcr8es plugs
and a decent standalone ems.

30psi, 19.5 degrees of timing and 352whp on ron98. With a more suited cam, larger injectors and slightly smaller turbo (the holset hits 30psi by 3800-4000rpm) I bet the number would be even higher.
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Old 11-14-2017, 06:13 PM   #6
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Quote:
Originally Posted by eabras View Post
What I did to get 352whp from a b21, just to show what can be done without spending a ****load of cash:

Stock 7,5:1 compression shortblock (b21et, same as us b21ft)
Stock 398 k-jet head, stock valves but stiffer springs
Stock v-camshaft timed straight up
stock k-jet intake manifold
stock 90+ manifold (flange opened up to t3 size)
stock headgasket
holset hy35cw
3" exhaust with a single muffler
siemens deka 63lb injectors mounted in k-jet holes in head
dw300 intank pump
dodge 4bar fpr
generic ebay ic
accel ultracoil, stock dizzy, some generic accel plugwires, bcr8es plugs
and a decent standalone ems.

30psi, 19.5 degrees of timing and 352whp on ron98. With a more suited cam, larger injectors and slightly smaller turbo (the holset hits 30psi by 3800-4000rpm) I bet the number would be even higher.
30 psi

How many miles on something like that?
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Old 11-15-2017, 11:41 AM   #7
eabras
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Originally Posted by soclosenotnear View Post
How many miles on something like that?
I guess that if the crank position sensor hadn't let go, it would still be running. Timing was suddenly way off, blew hg and bent the rods.
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Old Yesterday, 07:43 AM   #8
tyrefryrevolvo
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Thanks for the responses guys, And budget and time go hand in hand for me , but i would rather save the money and buy quality parts than to have to do something twice. but dont get me wrong im not afraid of the junkyard either. Im just not familiar with what parts are compatible with eachother and which years on the 240's , im talking big ticket items like cylinder heads and cams etc... but i would not put an ebay turbo on my car lol thats just me.
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Old Yesterday, 10:08 AM   #9
photoman327
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Quote:
Originally Posted by eabras View Post
What I did to get 352whp from a b21, just to show what can be done without spending a ****load of cash:

Stock 7,5:1 compression shortblock (b21et, same as us b21ft)
Stock 398 k-jet head, stock valves but stiffer springs
Stock v-camshaft timed straight up
stock k-jet intake manifold
stock 90+ manifold (flange opened up to t3 size)
stock headgasket
holset hy35cw
3" exhaust with a single muffler
siemens deka 63lb injectors mounted in k-jet holes in head
dw300 intank pump
dodge 4bar fpr
generic ebay ic
accel ultracoil, stock dizzy, some generic accel plugwires, bcr8es plugs
and a decent standalone ems.

30psi, 19.5 degrees of timing and 352whp on ron98. With a more suited cam, larger injectors and slightly smaller turbo (the holset hits 30psi by 3800-4000rpm) I bet the number would be even higher.
Good number from a B21 and I was thinking of junking a couple.
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Old Yesterday, 11:25 AM   #10
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How are you going to pass smog with a heavily modified car in California?
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Old Yesterday, 11:45 AM   #11
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Quote:
Originally Posted by Mueller View Post
How are you going to pass smog with a heavily modified car in California?
That's what I was thinking but I decided it'd let it go.
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Old Yesterday, 11:49 AM   #12
Redwood Chair
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Originally Posted by photoman327 View Post
Good number from a B21 and I was thinking of junking a couple.


You guys always do that, and then put those horrible B230Ft things in there.

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Folks on here don't know a good deal when they see it.
how psi a stock can support?

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Old Yesterday, 03:39 PM   #13
John V, outside agitator
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You guys always do that, and then put those horrible B230Ft things in there.


Iddnit weirder than fawk?

I can't understand where the hell the ideas form that there is anything wrong with the B21 or B23 but i swear I've has SOOOOOOOOOOOOOOOOOOOOOOOOOooooooooo many people say "Oh the B230 are MUCH better-er-er, eeeeeverybody says so"

Huh?
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Old Yesterday, 04:35 PM   #14
culberro
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Quote:
Originally Posted by John V, outside agitator View Post
Iddnit weirder than fawk?

I can't understand where the hell the ideas form that there is anything wrong with the B21 or B23 but i swear I've has SOOOOOOOOOOOOOOOOOOOOOOOOOooooooooo many people say "Oh the B230 are MUCH better-er-er, eeeeeverybody says so"

Huh?
Nothing wrong with a b21 or b23 motor.
The b230 is a more efficient design and they're easier to come by.
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Old Yesterday, 05:36 PM   #15
eabras
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Speaking of b230's, I'm replacing the b21 with a b230. 149mm rods and stock f-pistons
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Old Yesterday, 06:18 PM   #16
John V, outside agitator
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Quote:
Originally Posted by culberro View Post
Nothing wrong with a b21 or b23 motor.
The b230 is a more efficient design and they're easier to come by.
Efficient? You mean lower drag? Stock to stock sure..But built to build its a meh.

And more truthiness yep easier to come by.

But no reason to go out of the way to find one or the other.
Build whatchoo got.
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Old Yesterday, 06:36 PM   #17
culberro
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Build whatchoo got.
Exactly this.
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