Bridge Porting cutting housing part?
08-07-11, 07:40 PM
#1
Bridge Porting cutting housing part?
So I have just started a huge study of bridgeporting since I would love to do it to my current turbo build anyways I know what the bridge port is and what not, but what I never realized was that you had to cut into your housing!?!?
http://www.mazdatrix.com/faq/portbp.htm
So how does this effect the wear on your apex seals? and can this cut be done with a dremel or does it need to be machined to perfection? And also if done correctly is there any effects on the housing?
And also can you do a small or mild street port plus the eyebrow or is it recommended to just add the eyebrow?
http://www.mazdatrix.com/faq/portbp.htm
So how does this effect the wear on your apex seals? and can this cut be done with a dremel or does it need to be machined to perfection? And also if done correctly is there any effects on the housing?
And also can you do a small or mild street port plus the eyebrow or is it recommended to just add the eyebrow?
08-08-11, 04:41 AM
#4
U guys must do some real conservative bridge cuts. Even using a RB template ull still be notching the housing to get the most out of the port. For a full bridge cut w/notched housings ull generally need 1pc seals, the corner pc of a 2pc seal can drop into the eyebrow and cause total carnage.
08-08-11, 03:48 PM
#6
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
Nice healthy bridges will require some notching of the housing. Smaller more conservative bridges may not. But be aware that widening the bridge by going towards the inner of the iron (to avoid notching the housing) starts to move it closer to the end of the side seal. Go to far and you'll end up catching the corner of the side seal, wearing it quickly.
Trending Topics
08-11-11, 08:33 AM
#11
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
There are plenty of bridgeported NA 13Bs in the 350HP range but realistically, if you are looking to make that kind of power, turbocharging is the only reasonable option.
08-11-11, 11:30 AM
#12
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,841
Received 2,604 Likes
on
1,847 Posts
i just saw a dyno sheet from a BP turbo car, and its more like 450hp
08-16-11, 11:48 PM
#14
WHY do you feel you NEED a bridge port for drifting?
a simple street port and a small turbo will EASILY get you the power you are looking for, and then some. and you're not sacrificing your midrange, which is where you really need power for drifting.
those two combos will give you pretty good results in the response department.
a simple street port and a small turbo will EASILY get you the power you are looking for, and then some. and you're not sacrificing your midrange, which is where you really need power for drifting.
those two combos will give you pretty good results in the response department.
08-17-11, 12:33 AM
#15
Daily Used and Abused
iTrader: (1)
Join Date: Dec 2008
Location: South Florida
Posts: 290
Likes: 0
Received 0 Likes
on
0 Posts
agreed^ infact without porting and small decent size turbo for quick response will get you there lol. with a stock TII you can even change the secondary injectors to 720cc and boost approx 13psi, netting you around 250-270whp already =)
