bp vs bpt
June-8th-2003, 06:11 PM
#1
Registered User
Thread Starter
Join Date: Mar 2003
Location: baltimore
Posts: 136
bp vs bpt
i've seen a lot of discussion between these engines in this forum i just need some clairfication
i see differant compression ratios and they say the bp breaths better and many say get the bp and then get the turbo from the bpt and turbo that.
which one is better suited for the turbo and if i get the bp where can i get just the turbo manifold , turbo and intercooler and all of that to put on the bp.and if i go to the junk yard and get the dohc from an lx model will the turbo mainfold from the bpt fit I want the best over all set up and i know you guys know this stuff better than me. any info to help me out would be great thanx
also if i get a low milage bp from the junk yard what should i get with it to save time and money later like the tranny half shafts ecu ect.
i see differant compression ratios and they say the bp breaths better and many say get the bp and then get the turbo from the bpt and turbo that.
which one is better suited for the turbo and if i get the bp where can i get just the turbo manifold , turbo and intercooler and all of that to put on the bp.and if i go to the junk yard and get the dohc from an lx model will the turbo mainfold from the bpt fit I want the best over all set up and i know you guys know this stuff better than me. any info to help me out would be great thanx
also if i get a low milage bp from the junk yard what should i get with it to save time and money later like the tranny half shafts ecu ect.
Last edited by jedwards242000; June-8th-2003 at 06:13 PM.
June-8th-2003, 06:54 PM
#2
formerly chastan
Join Date: Jul 2002
Location: California, USA
Posts: 2,350
Here's why people say to use the N/A head instead of the BPT head:
http://www.protegeclub.com/forum/sho...threadid=24438
So my recommendation would be to just get the exhaust manifold and turbo, like you said. You can get the exhaust manifold from corksport for $176. Braden (turboge) used to sell that stuff, I don't know that he has any more...I think he's more interested in doing Mazdaspeed Protege tuning now... This isn't the original turbo, it might be one of the ones that bolts up...somebody else will say... but you get the idea... http://cgi.ebay.com/ebaymotors/ws/eB...tem=2418144467
intercooler...hmmm search for whatever
http://www.protegeclub.com/forum/sho...threadid=24438
So my recommendation would be to just get the exhaust manifold and turbo, like you said. You can get the exhaust manifold from corksport for $176. Braden (turboge) used to sell that stuff, I don't know that he has any more...I think he's more interested in doing Mazdaspeed Protege tuning now... This isn't the original turbo, it might be one of the ones that bolts up...somebody else will say... but you get the idea... http://cgi.ebay.com/ebaymotors/ws/eB...tem=2418144467
intercooler...hmmm search for whatever
June-8th-2003, 07:16 PM
#3
Registered User
Thread Starter
Join Date: Mar 2003
Location: baltimore
Posts: 136
thanx chastan anyone else with opinions like to get as much feedback as possible due to wanting a fast pro if you know anyone in the baltimore area that works on these cars who i could take it to that would be great faztcarz has seemed to go out of business or they changed their number i don't know which one i can't find them
June-8th-2003, 11:02 PM
#4
Protege Enthusiast
Join Date: Apr 2002
Location: British Columbia, Canada
Posts: 211
One reason you may not want to do a BP build up to a Turbo is if you have an early motor. IIRC 90 and early 91, BP Motors had a crank snout problem. When I had my motor apart I found that the crank had fused.
Other than that, if your motor has high miles and your looking to rebuild it soon I would just look at a BPT.
If you do end up with a BPT, a DOHC head is not that rare if you want the less restrictive head. Though the "restrictions" in the turbo intake are there to aid in low rpm velocity. So you would loose a little at the bottom for more power in the top with the N/A head. Additionally, with the BPT comes with the uprated Fuel injectors, non VICS intake (FWIR VICS in not perticularly good for turbo applications.) Oil return lines. low compression pistons, turbo specific cams and of course the manifold and the Turbo!
Either option will work, it just depends on what you've got and what you want. And Of course you have to have the $$ and patience to get there
Other than that, if your motor has high miles and your looking to rebuild it soon I would just look at a BPT.
If you do end up with a BPT, a DOHC head is not that rare if you want the less restrictive head. Though the "restrictions" in the turbo intake are there to aid in low rpm velocity. So you would loose a little at the bottom for more power in the top with the N/A head. Additionally, with the BPT comes with the uprated Fuel injectors, non VICS intake (FWIR VICS in not perticularly good for turbo applications.) Oil return lines. low compression pistons, turbo specific cams and of course the manifold and the Turbo!
Either option will work, it just depends on what you've got and what you want. And Of course you have to have the $$ and patience to get there
June-9th-2003, 11:30 AM
#5
Registered User
Join Date: Apr 2003
Location: Dallas, Tx
Posts: 125
wessico makes hi comp pistons that up the ratio to a 14:1
They're for the miata, so theoretically they should work.
Let me know if you think they will. I plan to put them in a NA BP block. Its almost like running a turbo without the manifold, or any of the turbo setup.
http://www.importperformanceparts.ne...ons_mazda.html
They're for the miata, so theoretically they should work.
Let me know if you think they will. I plan to put them in a NA BP block. Its almost like running a turbo without the manifold, or any of the turbo setup.
http://www.importperformanceparts.ne...ons_mazda.html
June-9th-2003, 11:32 AM
#6
Registered User
Join Date: Apr 2003
Location: Dallas, Tx
Posts: 125
the only problem is that the 14:1 comp ratio is for the 1.6. Is there any way that they might fit a 1.8 block?
If not then the max they make for the 1.8 is 11:1
Still good, but not as high as I would like.
If not then the max they make for the 1.8 is 11:1
Still good, but not as high as I would like.
June-11th-2003, 05:56 PM
#8
Registered User
Join Date: Jun 2002
Posts: 2,130
Originally posted by rkives
One reason you may not want to do a BP build up to a Turbo is if you have an early motor. IIRC 90 and early 91, BP Motors had a crank snout problem. When I had my motor apart I found that the crank had fused.
Other than that, if your motor has high miles and your looking to rebuild it soon I would just look at a BPT.
If you do end up with a BPT, a DOHC head is not that rare if you want the less restrictive head. Though the "restrictions" in the turbo intake are there to aid in low rpm velocity. So you would loose a little at the bottom for more power in the top with the N/A head. Additionally, with the BPT comes with the uprated Fuel injectors, non VICS intake (FWIR VICS in not perticularly good for turbo applications.) Oil return lines. low compression pistons, turbo specific cams and of course the manifold and the Turbo!
Either option will work, it just depends on what you've got and what you want. And Of course you have to have the $$ and patience to get there
One reason you may not want to do a BP build up to a Turbo is if you have an early motor. IIRC 90 and early 91, BP Motors had a crank snout problem. When I had my motor apart I found that the crank had fused.
Other than that, if your motor has high miles and your looking to rebuild it soon I would just look at a BPT.
If you do end up with a BPT, a DOHC head is not that rare if you want the less restrictive head. Though the "restrictions" in the turbo intake are there to aid in low rpm velocity. So you would loose a little at the bottom for more power in the top with the N/A head. Additionally, with the BPT comes with the uprated Fuel injectors, non VICS intake (FWIR VICS in not perticularly good for turbo applications.) Oil return lines. low compression pistons, turbo specific cams and of course the manifold and the Turbo!
Either option will work, it just depends on what you've got and what you want. And Of course you have to have the $$ and patience to get there
August-19th-2004, 12:33 PM
#9
Registered User
Join Date: Apr 2004
Posts: 121
crankshaft pulley
Originally Posted by rkives
One reason you may not want to do a BP build up to a Turbo is if you have an early motor. IIRC 90 and early 91, BP Motors had a crank snout problem...
Thats why the 92-94 DOHC crankshaft pulley was redesigned eliminating that problem. The underdrive pulley of the 90-91 is a one piece while the 92-94 is a two piece design and besides they are not interchangle even if the block is a BP05 for all those years.
August-30th-2004, 07:29 AM
#10
Registered User
Join Date: Oct 2002
Location: Hamilton Ontario
Posts: 175
Originally Posted by D323
the only problem is that the 14:1 comp ratio is for the 1.6. Is there any way that they might fit a 1.8 block?
If not then the max they make for the 1.8 is 11:1
Still good, but not as high as I would like.
If not then the max they make for the 1.8 is 11:1
Still good, but not as high as I would like.
It's funny, those exact pistons cost $561 at Flyin Miata.
