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Old 10-09-2013, 10:56 AM   #1
blake5126
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ba 1.8 head on bg bp

Is the ba head better on the bg bp if so what are the benefits
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Old 10-09-2013, 11:05 AM   #2
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SOHC BG or DOHC?

Which series BA? Later series moved to SOB or SUB forget which from HLA. Different cams too IIRC.
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Old 10-09-2013, 11:08 AM   #3
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Doch
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Old 10-09-2013, 11:27 AM   #4
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Was just wondering if it would work and what difference it would do
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Old 10-09-2013, 12:31 PM   #5
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Turbo or NA?
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Old 10-09-2013, 12:57 PM   #6
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heads are the same
only cams and lifter changed for BA3
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Old 10-09-2013, 06:02 PM   #7
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if your going to do it get a ba3 head.. there out of a 1996-97 astina ba 1.8.. they have 9mm lift cams
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Old 11-09-2013, 12:44 AM   #8
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Are these the same cams used in the 99 MX5?
Did these BA3s have a higher power rating in AU?
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Old 11-09-2013, 02:03 AM   #9
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if your going to do it get a ba3 head.. there out of a 1996-97 astina ba 1.8.. they have 9mm lift cams
no they don't
they have 8.3/8.8mm cams
9mm cams strictly reserved for mazdaspeed
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Old 11-09-2013, 02:04 AM   #10
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Are these the same cams used in the 99 MX5?
Did these BA3s have a higher power rating in AU?
no power level changes... cams are different from the MX5... MX5 cams are better
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Old 11-09-2013, 06:37 AM   #11
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Quote:
Originally Posted by HMT View Post
Are these the same cams used in the 99 MX5?
Did these BA3s have a higher power rating in AU?
to add to what edwin said. they are the same cams and lifters as a 98-00 NB MX5. but the MX5 version has more duration. they will swap fine between the engines as long as the shim is not too worn.
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Old 11-09-2013, 06:38 AM   #12
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BP-ZE (323 90- may 96, MX5 94-97)
Intake cam duration 233° @ 0.003"
Intake cam opening 5° BTDC
Intake cam closing 48° ABDC
Intake cam lobe height 44.094mm (1.7360")
Intake cam base circle 35.941mm (1.415")
Intake valve lift 8.1534mm (0.321")
Exhaust cam duration 250° @ 0.003"
Exhaust cam opening 56° BBDC
Exhaust cam closing 14° ATDC
Exhaust cam lobe height 44.600mm (1.7560")
Exhaust cam base circle 35.941mm (1.415")
Exhaust valve lift 8.6614mm (0.341")
Valve overlap 19°

BP-ZE (323 may96 - 98)
Intake cam duration 233° @ 0.003"
Intake cam opening 3° BTDC
Intake cam closing 50° ABDC
Intake cam lobe height 44.3mm (1.744")
Intake cam base circle 36.0mm (1.418")
Intake valve lift 8.3mm (0.327")
Exhaust cam duration 241° @ 0.003"
Exhaust cam opening 51° BBDC
Exhaust cam closing 10° ATDC
Exhaust cam lobe height 44.9mm (1.768")
Exhaust cam base circle 36.0mm (1.418")
Exhaust valve lift 8.890mm (0.350")
Valve overlap 13°

BP-ZET (323 90-94)
Intake cam duration 233° @ 0.003"
Intake cam opening 2° BTDC
Intake cam closing 51° ABDC
Intake cam lobe height 44.094mm (1.7360")
Intake cam base circle 35.941mm (1.415")
Intake valve lift 8.1534mm (0.321")
Exhaust cam duration 247° @ 0.003"
Exhaust cam opening 59° BBDC
Exhaust cam closing 8° ATDC
Exhaust cam lobe height 44.600mm (1.7560")
Exhaust cam base circle 35.941mm (1.415")
Exhaust valve lift 8.6614mm (0.341")
Valve overlap 10°

BP-4W (MX5 98-00)
Intake cam duration 237° @ 0.003"
Intake cam opening 8° BTDC
Intake cam closing 49° ABDC
Intake cam lobe height 44.3mm (1.744")
Intake cam base circle 36.0mm (1.418")
Intake valve lift 8.28mm (0.327")
Exhaust cam duration 242° @ 0.003"
Exhaust cam opening 53° BBDC
Exhaust cam closing 9° ATDC
Exhaust cam lobe height 44.9mm (1.768")
Exhaust cam base circle 36.0mm (1.418")
Exhaust valve lift 8.890mm (0.350")
Valve overlap 17°

BP-4WT (MX5 01-03)
Intake cam duration 241° @ 0.003"
Intake cam opening 8° BTDC
Intake cam closing 53° ABDC
Intake cam lobe height 44.8mm (1.764")
Intake cam base circle 36.0mm (1.418")
Intake valve lift 8.7884mm (0.346")
Exhaust cam duration 242° @ 0.003"
Exhaust cam opening 53° BBDC
Exhaust cam closing 9° ATDC
Exhaust cam lobe height 44.9mm (1.768")
Exhaust cam base circle 36.0mm (1.418")
Exhaust valve lift 8.890mm (0.350")
Valve overlap 17°
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Old 11-09-2013, 03:48 PM   #13
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to add to what edwin said. they are the same cams and lifters as a 98-00 NB MX5. but the MX5 version has more duration. they will swap fine between the engines as long as the shim is not too worn.
different durations means they are DIFFERENT cams
they are NOT THE SAME!!!
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Old 26-09-2013, 10:44 PM   #14
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Ok so if i put the head on with that cam what are the benefits more revy engine I'm guessing?
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Old 27-09-2013, 05:43 AM   #15
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different durations means they are DIFFERENT cams
they are NOT THE SAME!!!
go home loser. you add no value here.
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Old 27-09-2013, 05:03 PM   #16
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says the one who disseminated misinformation
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Old 27-09-2013, 05:04 PM   #17
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Ok so if i put the head on with that cam what are the benefits more revy engine I'm guessing?
no cold start engine ticking from the lifters, better low end torque at the expense of top end power (can be fixed with NB1 MX-5 cam swap)
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Old 27-09-2013, 05:20 PM   #18
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says the one who disseminated misinformation
says the one that put up incorrect lift specs earlier in the thread. but then again i didn't pull you up on it cos it was only 0.1mm difference from correct.

if you wanna check, there is this site called protegefaq. maybe you have heard of it? it gives different lift specs than what you posted.

but since you wanna go nazi on every fine detail and pick apart all the previous posts out of context. then the same can be done for a useless loser like you. no wonder they chased you off the usdm forums.

Last edited by project.r.racing; 27-09-2013 at 05:23 PM.
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Old 27-09-2013, 05:28 PM   #19
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you said the BA3 cams are the same as the NB1 cams, I said they are not... you copy and pasted those specs yourself, why are you still saying you're right when I pointed out you were wrong?

you're just wrong, period
the specs clearly are way different between both the BA3 and NB1, nevermind that they are "close". Close does not mean "same". Mazda does not use adjustable cam gears or any fancy crap to make one cam work differently in a different application. No, they cut a different cam, stock it under a different part number, and put that different cam in the other engine, plain and simple!
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Old 27-09-2013, 06:28 PM   #20
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again you took what i typed and used it out of context with the same/close bit. just dont be rude when making corrections.

it just a forum. post when typed don't always read the way they should. grammer isn't at a great level. and the way you may read something is different from the way other may read it.

grow up. move on. stop being a padentic child.
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