half bridge or full bridge

Started by lee mills, May 12, 2009, 05:56:59 PM

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lee mills

Just got off the phone to Geff @reworx and it looks like my engine will probably have to be stripped down.Hopefully most if not all internal parts will be able to be reused but i would like to take advantage of the situation and get more porting done. with this in mind im would like to know the advantages of a full bridge over half bridge and vice versa.
The car is used for fast road and Drag racing
Thanks
Lee

BlitzBoy

if want full bridge then you need 1 piece apex seals, but you will lose any sort of road driveabilty.
Go for half bridge like me and James,Col. Era done wonders on the porting side :D
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark

JayDee

You sure Mr Blitz about the one piece seals!!!
J

Quote from: BlitzBoy;607115if want full bridge then you need 1 piece apex seals, but you will lose any sort of road driveabilty.

Hi RX7

Ah so that was your car on the dyno today, I was down getting the oil changed on mine, thats one big turbo you have there!

lee mills

Will speak to Geff first but thinkking large half bridge with clearanced rotors:D
 
Oh and a big credit card bill

Red and Single

I\'m curious, tell me to get lost by all means, but any reason why you chose Reworx as you have RX motors mentioned in your sig ??
Dave Hughes
13.352 @ 109.03mph (running 0.75 bar  :rollin )
Red \'95 Type R T04S & Bare Arsed  :chat

m1tch


lee mills

#7
Just the way it worked out. had my fuel lines and a few other bits uprated at Tims then went to Reworx to up the boost and i was losing power:eek: so left the car there for them to sort and this is just part of that process. the extra porting would just be me taking advantage of them having to strip the engine down anyway.
I normally use Rxmotors for any work that needs doing and Reworx for the tuning on the dyno

lee mills

Quote from: m1tch;607143PP :) tehe :D

Maybe a little ott:driving

gear1275

hey guys, sorry to but in but in. my water seals have just given up so i am in need of a rebuild and have been pointed in the direction of tim at rx motors, im really keen on a half bridge, im on stock twins at the moment and only have enough money to stay with them for now. how would a half bridge drive on stock twins? also, is the only expense ontop of a rebuild the machining for the bridge porting? or are there other things to be considered? i know it wont be the best drive around town and the economy isnt much good but i only get 10-13mpg atm driving average so it wouldnt make much difference or would it?
thanks, james

BlitzBoy

Quote from: JayDee;607124You sure Mr Blitz about the one piece seals!!!
J

depends how big the full bridge was i always thought , but im probably wrong lol
"Piston Killa" 3rd Gen\'94 \'Oldone Racing Full Bridge Ported REW 13b engine with SCR seals\'. HKS T51 KAI turbo BBM mapped Motec ECU

JDS/HKS Street Class Championship Runner up 2011
Rotorstock winner 08,09
http://pistonkilla.blogspot.com/
old spec HB T51 470 @ wheels @ 1.2 BAR, 555 @ fly 10.46 @ 130 @ 1.25 Bar
new spec FB T51 482 @ wheels @ 1.15 BAR, 570 @ fly

New Project
"el fénix" RX2 by Mark & Mark

lee mills

Quote from: gear1275;607164hey guys, sorry to but in but in. my water seals have just given up so i am in need of a rebuild and have been pointed in the direction of tim at rx motors, im really keen on a half bridge, im on stock twins at the moment and only have enough money to stay with them for now. how would a half bridge drive on stock twins? also, is the only expense ontop of a rebuild the machining for the bridge porting? or are there other things to be considered? i know it wont be the best drive around town and the economy isnt much good but i only get 10-13mpg atm driving average so it wouldnt make much difference or would it?
thanks, james

I cant fault any of the work Tim has done on my car. speak to Tim but i suspect a half bridhe is ott for stock twins but then i suppose it depends what your future plans are

kiwiracer

Quote from: JayDee;607124You sure Mr Blitz about the one piece seals!!!
J
 
Quote from: BlitzBoy;607115if want full bridge then you need 1 piece apex seals, but you will lose any sort of road driveabilty.

can be done but i am led to belive you have to watch out what kind off 2 piece seals you use

mx1311

im guessing how wide the left over bridge of metal is affects apex seal choice :)

colum

hairyhoover

don you also need solid corner seals?