Engine/model identification

project.r.racing · Postby **project.r.racing** » Thu Feb 13, 2014 1:31 pm

they handle power alot better than the fwd bothers. still can kill them is abused.

chasing 150wkW, then clutch selection is no different to selecting one for your TX3/323.

BPTravis · Postby **BPTravis** » Sun Mar 09, 2014 3:27 pm

Back again :-)

I've noticed that the BPT 323 throttle body might not bolt on to the NA8 inlet manifold.

If it Dosent, are the position sensors the same?
From a glance, they are both 4 wire mazda...
If they are no the same tps's does the 323 bolt in to the NA8 TB?

Or another solution besides welding the 323 one to the NA8 manifold haha

project.r.racing · Postby **project.r.racing** » Sun Mar 09, 2014 5:10 pm

Pretty sure the TPSs are the same.

But yeah the throttle bodies are different. A BG8Z TB are the same as a NA6 TB. A BAP1 or P2 TB is the same as a NA8, and a BAP3 is the same as a NB8A.

They are all 55mm diameter butterflies. Just the exturnals and add-ons are different.

BPTravis · Postby **BPTravis** » Wed Mar 12, 2014 5:49 pm

Thanks man :-) you have been an amazing help planning this conversion! I'll probably grab one and compare/trial it.

Another one for ya,
Are the sump baffles different at all between fwd and rwd bp's?
If they are will it matter/make any difference if I use either?

project.r.racing · Postby **project.r.racing** » Thu Mar 13, 2014 8:29 am

baffles and oil pickup pipes all different inside the sump fwd vs rwd

BPTravis · Postby **BPTravis** » Sun Mar 30, 2014 4:16 am

Yo,
Any difference between;
323 bp, 323 bpt, NA8 bp injectors?

project.r.racing · Postby **project.r.racing** » Sun Mar 30, 2014 9:46 am

BPTravis wrote:Yo,
Any difference between;
323 bp, 323 bpt, NA8 bp injectors?

yes

90-96 323, 94-97 mx5 252cc

90-94 bpt
no pics but same as above but black not tan

96-98 323 220cc

98-00 mx5 240cc

00-03 mx5 265cc

BPTravis · Postby **BPTravis** » Mon Mar 31, 2014 5:57 pm

How many cc are bpt?

93_Clubman · Postby **93_Clubman** » Mon Mar 31, 2014 11:36 pm

BPTravis · Postby **BPTravis** » Tue Apr 01, 2014 3:37 am

So i guess id be better off with bpt or better
Would the lower cc injectors be alright for low boost to begin with?

What is the next step up from bpt ones? Evo or something?

sailaholic · Postby **sailaholic** » Tue Apr 01, 2014 5:46 am

Rx8 injectors are 440cc much better spray pattern being a much later design and drop in replacements (assuming your ecu can handle them) should only cost you about the same as getting bpt ones cleaned.

Aren't you trying to run a bpt computer though? If so won't you need to run pretty close to what it's expecting.

Oh, I've got a set of b2600 injectors which are 325s for memory at home that I took out as I suspected one was sticky at light duty cycles. Also a drop in replacement

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BPTravis · Postby **BPTravis** » Tue Apr 01, 2014 7:11 am

Ive run bpts on bp na injectors before (stock bpt ecu) no noticeable difference from a normal bpt
But it wasnt my car and was factory boost levels only

project.r.racing · Postby **project.r.racing** » Tue Apr 01, 2014 9:15 am

if you are moving away from the stock injectors, then getting the newer 4 nozzle versions is the way to go. fuel atomizes better and you get more power and less fuel used.

as above the 440c yellow rx8 injectors would be the next step up. $200 new for all 4.