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Old 11-05-2017, 10:34 PM   #1
Yaboy_chun
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Default Best head for b23f na build?

Im brand new to the site and to the volvo world. I have a 1983 240 dl with the b23f and I want to build it Na. I'm also looking for some high revs. I know I'm not really going to make any power and I know that. My main concern is just revving high as possible. Wondering what the best head and other parts would work.
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Old 11-05-2017, 10:42 PM   #2
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Lighter rods and pistons,shave and use the head you have if the cam line is straight or go 16V budget permitting.
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Folks on here don't know a good deal when they see it.
how psi stock cna support?

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Old 11-05-2017, 10:45 PM   #3
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You'll have to get rid of lh2.0/2.1. As far as I know theres nothing to be done about the rev limiter. I'm in the same boat. Lh 2.4 swap? Microsquirt?
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Old 11-05-2017, 10:55 PM   #4
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https://www.acm.se/en/category/acm-8v-sohc-2


http://www.motordesign.se/en/cylinde...cyl-red-engine
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Old 11-05-2017, 11:00 PM   #5
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^ :cubic money:

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Old 11-05-2017, 11:24 PM   #6
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^ :cubic money:

Best way to deal with the surge of newbie "I want a fast NA car!" threads we've been getting as of late.
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Old 11-05-2017, 11:27 PM   #7
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Best way to deal with the surge of newbie "I want a fast NA car!" threads we've been getting as of late.


Or tell them to buy a BMW 'cos it'll be a cheaper and better car.
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Old 11-05-2017, 11:27 PM   #8
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Boost or go home

Edit: free rides to any n/a power wannabes, even stock boost levels leave the atmospherically induced cretins lusting
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Old 11-06-2017, 06:00 AM   #9
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My main concern is just revving high as possible. Wondering what the best head and other parts would work.

Don't take any offense at this but I think it's one of the dumber ideas I've seen around here in a while.

There's a reason these things have a rev limit... big heavy pistons and chunky rods don't make for high rpm vtec madness.

You don't want to be looking for a head, you want light weight rods and pistons.
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Old 11-06-2017, 10:36 AM   #10
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Best way to deal with the surge of newbie "I want a fast NA car!" threads we've been getting as of late.
You see that part in my post where I said "I know I'm not going to make any power" . Yeah. That's there for a reason.
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Old 11-06-2017, 10:40 AM   #11
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Boost or go home

Edit: free rides to any n/a power wannabes, even stock boost levels leave the atmospherically induced cretins lusting
Having dealed with enough turbo cars in my life. I just don't want the problems. I know I probably won't even touch 150hp but I already addressed that in my original post.
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Old 11-06-2017, 10:40 AM   #12
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Still dumb idea... see reasons listed.

Install a manual transmission. It’ll have no power but will seem faster.
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Old 11-06-2017, 10:41 AM   #13
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Lighter rods and pistons,shave and use the head you have if the cam line is straight or go 16V budget permitting.
**** thanks for giving an actual answer to my question instead of just saying to boost it.
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Old 11-06-2017, 10:41 AM   #14
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Still dumb idea... see reasons listed.

Install a manual transmission. It’ll have no power but will seem faster.
I have the m46.
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Old 11-06-2017, 10:44 AM   #15
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Boost or go home

Edit: free rides to any n/a power wannabes, even stock boost levels leave the atmospherically induced cretins lusting
Agreed. The only "true" replacement for displacement is forced induction. So, its either a v8 or a turbo if you're looking for a notable power increase.
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Old 11-06-2017, 12:45 PM   #16
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Boost or go home

Edit: free rides to any n/a power wannabes, even stock boost levels leave the atmospherically induced cretins lusting
Suuuuuuuuuure.

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Old 11-06-2017, 01:07 PM   #17
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Suuuuuuuuuure.

^^^^^^^
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Old 11-06-2017, 01:39 PM   #18
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All I see on those videos is conservation of momentum, I'm sure a turbo would make those cars much harder to control in those low traction conditions. IOW, it you can't handle the power, stay in the dirt.
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Old 11-07-2017, 10:30 PM   #19
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shave Head. 60 attack the ports with a grinder have bigger valves installed, some isky springs,lightweight retainers thin head gasket, and or zero deck block, custom grind cam from John-v then a big fat nitrous hit , then rev to the Moon till the rods come out also i would recommend 4:56 or 5:13 rear gear and a header

Last edited by freevolvos; 11-07-2017 at 10:37 PM..
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Old 11-07-2017, 10:38 PM   #20
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Originally Posted by Yaboy_chun View Post
I'm also looking for some high revs.


Quote:
Originally Posted by Yaboy_chun View Post
You see that part in my post where I said "I know I'm not going to make any power" . Yeah. That's there for a reason.
Yeah your grasp of how engines work has become very apparent. Have fun getting nowhere.
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Old 11-07-2017, 10:59 PM   #21
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Wren's in Athens, take it to him and he'll fix you up.
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Old 11-08-2017, 05:35 PM   #22
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Exhaust, Cam and twin 45's = enjoy
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Old 11-08-2017, 05:37 PM   #23
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Exhaust, Cam and twin 45's = enjoy
That'll run out of puff well before 6000. Guy wants REVS.
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Old 11-08-2017, 05:46 PM   #24
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Kjet revs to over 7000, 45's will have no trouble at higher RPMs. Dont forget suitable valve springs with the cam. Its a B23 so reving is no issue
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Old 11-08-2017, 06:03 PM   #25
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This would probably be the best head for a NA B23. 8000 rpms, 231 hp (69 hp more than B230FT). Who says NA can't make power?


Last edited by hiperfauto; 11-08-2017 at 06:39 PM..
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