Half-bridge?
07-22-2003, 02:28 PM
#11
Senior Member
Join Date: Jun 2003
Location: Grand Prairie, TX
Posts: 917
Originally Posted by 93 R1' date='Jul 22 2003, 11:13 AM
Great post BDC.
You pretty much confirmed everything Judge Ito and I talked about as far as "streetability" and "reliability" on a 1/2 bridge turbo motor. Meaning that if the motor is purpose built(street) it shouldn't have the problems associated with a full bridge, like flooding, insanely high idle, etc...
I have also talked with Crispeed on the other forum about a turbo'd 1/2 bridge street car. He had a 2nd gen T70 1/2 bridge that made:
"515 RWHP/390 RWTQ at 20 psi on 93 octane. It was done with a T-70/ P-trim 1.0 on a TII motor. The same car made 555 RWHP/ 420 RWTQ at 25psi on 116 octane. On a 50 shot of NOS it made 615 RWHP/460 RWTQ."
Now thats ******* crazy. All that on a p-trim T70 with a 1.0 a/r hotside. Could probably make a good bit more by swapping to a bigger a/r hotside or a q-trim, I would think.
Very nice porting work by the way
You pretty much confirmed everything Judge Ito and I talked about as far as "streetability" and "reliability" on a 1/2 bridge turbo motor. Meaning that if the motor is purpose built(street) it shouldn't have the problems associated with a full bridge, like flooding, insanely high idle, etc...
I have also talked with Crispeed on the other forum about a turbo'd 1/2 bridge street car. He had a 2nd gen T70 1/2 bridge that made:
"515 RWHP/390 RWTQ at 20 psi on 93 octane. It was done with a T-70/ P-trim 1.0 on a TII motor. The same car made 555 RWHP/ 420 RWTQ at 25psi on 116 octane. On a 50 shot of NOS it made 615 RWHP/460 RWTQ."
Now thats ******* crazy. All that on a p-trim T70 with a 1.0 a/r hotside. Could probably make a good bit more by swapping to a bigger a/r hotside or a q-trim, I would think.
Very nice porting work by the way
Thanks for the compliment.
B
07-23-2003, 12:19 PM
#18
Senior Member
Join Date: Jun 2003
Location: Grand Prairie, TX
Posts: 917
I use either a drill or a drill press with a 7/64" bit in several places. The way I mark the bridge cuts are by putting pins in the irons and placing the rotor housing down as an indexer. I draw out the area to cut w/ a black Sharpee.
After drilling the several number of holes, I "connect" the dots and then clean and smoothen the cut up using a very, very small silicone-carbide grinding stone.
B
After drilling the several number of holes, I "connect" the dots and then clean and smoothen the cut up using a very, very small silicone-carbide grinding stone.
B
07-24-2003, 04:33 PM
#20
Member
Thread Starter
Join Date: Dec 2002
Posts: 78
Originally Posted by BigTurbo74' date='Jul 22 2003, 10:38 AM
[quote name='2a' date='RoN+Jul 22 2003, 01:48 AM'] Well, I decided to just stick with the street port for now, as I think the turbo would not take advantage of the bp and I currently don't have a full standalone which would pretty much be a necessity with a bp. I was being a little modest with the exhaust ports, they are actually opened up a little, being about the size of the sleeve. I didn't want to make them any bigger than the sleeve and then have the exhuast gases have more turbulence from hitting the edge of the sleeve. Thanks for all your replies! and someday you guys will hear from me about my half bp.... someday... muahahaha.
-Aaron
-Aaron
No its going to be a turbo'ed TII motor...