Turning aggrsive street port in to half bridge
#1
GT4088R
Thread Starter
Join Date: Jan 2006
Location: UK
Posts: 467
Likes: 0
Received 0 Likes
on
0 Posts
Turning aggrsive street port in to half bridge
Got the templates for an agressive street port, but since emmisions dont really matter now can I use the template and turn it into a half bridge???
Looking at photos i cant seeing it being that hard???
Help.
Looking at photos i cant seeing it being that hard???
Help.
#5
Red Pill Dealer
iTrader: (10)
I'm no expert, but the RB street port template I have is also for a bridge port. That said, I hear RB templates are "mild". As stated above. Make sure you have enough metal left to leave a bridge. To keep the leading edge of the side seal safe, the eye-brow port can really only extend about 4.5mm out from the rotor housing. Maybe 5mm. No more.
#6
Rotary Enthusiast
iTrader: (1)
This is about as big a streetport you can go and bridgeport it. If you look closely at the first picture you can see a scribe line next to the opening edge of the port that is the path of the leading edge of the sideseal and the wall on the coolant seal is a little over 1mm thick that's about the thinnest you want to go or you will be worrying about it cracking and breaking pieces into your engine. Hope these visuals help you out a bit. This is a motor I just recently built this pictures are the beginning of the porting just rough cuts. I'll try to get pictures of the finished product up.
#7
Rotary Enthusiast
Join Date: Dec 2001
Location: UK
Posts: 1,271
Likes: 0
Received 0 Likes
on
0 Posts
when i did my Bridge i left the opening edge of the port just to get as much metal left in the bridge as poss, The Only way you can realy open the port is up (the closing edge) and when you cut the extra Port make sure you relive the Rotor Housings so you don't block them back up with the Housing and most Importantly leave as much as you can around the water seal groove.
Remember its more about the Runner than the Port its self, and not taking to much out of the Bridge as to weaken it.
You can't realy use an Agressive Street port Template as it takes metal out of the opening edge of the Port (which you don't realy want)
Remember its more about the Runner than the Port its self, and not taking to much out of the Bridge as to weaken it.
You can't realy use an Agressive Street port Template as it takes metal out of the opening edge of the Port (which you don't realy want)
Trending Topics
#9
GT4088R
Thread Starter
Join Date: Jan 2006
Location: UK
Posts: 467
Likes: 0
Received 0 Likes
on
0 Posts
The template I have is one of judges.
I have had a look today and seem like it is possible, but I might make the port 1mm shorter so the bridge is slightly bigger. I'll not know till I scribe it out.
13btnos: nice looking engine there
Half bridge means the primary is street ported and the secondary's are bridged??
I have had a look today and seem like it is possible, but I might make the port 1mm shorter so the bridge is slightly bigger. I'll not know till I scribe it out.
13btnos: nice looking engine there
Half bridge means the primary is street ported and the secondary's are bridged??
Last edited by BuckyFD3; 04-18-06 at 02:34 PM.
#10
Rotary Enthusiast
iTrader: (1)
Originally Posted by BuckyFD3
The template I have is one of judges.
I have had a look today and seem like it is possible, but I might make the port 1mm shorter so the bridge is slightly bigger. I'll not know till I scribe it out.
13btnos: nice looking engine there
Half bridge means the primary is street ported and the secondary's are bridged??
I have had a look today and seem like it is possible, but I might make the port 1mm shorter so the bridge is slightly bigger. I'll not know till I scribe it out.
13btnos: nice looking engine there
Half bridge means the primary is street ported and the secondary's are bridged??
#11
GT4088R
Thread Starter
Join Date: Jan 2006
Location: UK
Posts: 467
Likes: 0
Received 0 Likes
on
0 Posts
Them datsuns are cool as f*ck. My old man used to have one.
I'll have a look at my templates 2morrow and work summit out and post on here for some advice.
Thanks again.
I'll have a look at my templates 2morrow and work summit out and post on here for some advice.
Thanks again.
#14
Rotary Enthusiast
Join Date: Dec 2001
Location: UK
Posts: 1,271
Likes: 0
Received 0 Likes
on
0 Posts
well mine used to idle at 1100rpm but people have been known to set them to 900 for the real Brap sound and higher to reduce the Bucking at low speed.
But i liked the 1100 as it was a good mix of both worlds.
But i liked the 1100 as it was a good mix of both worlds.
#15
GT4088R
Thread Starter
Join Date: Jan 2006
Location: UK
Posts: 467
Likes: 0
Received 0 Likes
on
0 Posts
I can live with 1100rpm, just didn't want it at 2000rpm.
As you can see fromt he other thread I have already started doing it.
13BNOS: Can you give me the diamensions of the exhaust port your using??? I dont have a template for the exhaust so it would be a massive help.
As you can see fromt he other thread I have already started doing it.
13BNOS: Can you give me the diamensions of the exhaust port your using??? I dont have a template for the exhaust so it would be a massive help.
Last edited by BuckyFD3; 04-22-06 at 07:29 PM.