My car lives!
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From: Ottawa, Canada
My car lives!
Just tonight, we fired up for the first time my half bridge port engine. With the help of FC3S.USD, Evilrotor, and WankelingBeer it was finally completed.
I built the engine myself and it currently has a ported wastegate series 5 turbo, which I expect will do poorly with the half bridge. It has the racing beat full exhaust, which is impressively quiet compared to others. The engine already idles by itself around 1200-1300, and compression is still building. The car is running a Haltech e6x with 550 primary and 1600 secondary. The top mount intercooler will be mounted in the front, and the stock TII fuel pump changed out for a walbro before any serious boosting occurs.
I'm posting this to thank those that helped me, and to let everyone know I will be on the road again soon.
I built the engine myself and it currently has a ported wastegate series 5 turbo, which I expect will do poorly with the half bridge. It has the racing beat full exhaust, which is impressively quiet compared to others. The engine already idles by itself around 1200-1300, and compression is still building. The car is running a Haltech e6x with 550 primary and 1600 secondary. The top mount intercooler will be mounted in the front, and the stock TII fuel pump changed out for a walbro before any serious boosting occurs.
I'm posting this to thank those that helped me, and to let everyone know I will be on the road again soon.
We did some wideband tuning to Nik's car today.
Car is already driving surprisingly smooth, given the porting and also the fact it only has 40km (or something) on the engine.
On the highway, you can't even tell its a HBP.
Basically, it is just a matter of Nik doing the break-in, then we can tune booooost!!!!
Car is already driving surprisingly smooth, given the porting and also the fact it only has 40km (or something) on the engine.
On the highway, you can't even tell its a HBP.
Basically, it is just a matter of Nik doing the break-in, then we can tune booooost!!!!
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From: Ottawa, Canada
Put a total of about 100 km on the engine today. Car runs good, despite a small oil leak in the cooler return hose. Hot starts are great, cold starts need some work still.
The RB exhaust quiets it down quite a bit, but you can still tell its a bridgeport
The RB exhaust quiets it down quite a bit, but you can still tell its a bridgeport
GrapefruitRacing?
Joined: Apr 2003
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From: PartSource
Originally Posted by nik
Put a total of about 100 km on the engine today. Car runs good, despite a small oil leak in the cooler return hose. Hot starts are great, cold starts need some work still.
The RB exhaust quiets it down quite a bit, but you can still tell its a bridgeport
The RB exhaust quiets it down quite a bit, but you can still tell its a bridgeport
Hope to join you on the streets very soon!
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Joined: Jun 2003
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From: Ottawa, Canada
It's no big secret, I just dont have a digicam
I used RB templates for bridgeport, and RB race exhaust templates. Since the RB bridgeport would require notching the rotor housings, and I wasn't interested in doing that, I only ported the eyebrow to the edge of the rotor housing. The port duration should be the same though.
The exhaust ports I could probably have made more extreme, but the RB race port is quite large already. Instead of porting to the edge of template, and then making a bevel, I just ported a bit and then made a bevel to the edge of the template. Also the whole thing was port matched to the exhaust sleeve.
I did the whole thing with dremel and carbide bit. The cast iron cuts nicely with dremel, but the aluminum rotor housings I found was the hardest. It's just too slow with a dremel.
160 Km as of today.
I used RB templates for bridgeport, and RB race exhaust templates. Since the RB bridgeport would require notching the rotor housings, and I wasn't interested in doing that, I only ported the eyebrow to the edge of the rotor housing. The port duration should be the same though.
The exhaust ports I could probably have made more extreme, but the RB race port is quite large already. Instead of porting to the edge of template, and then making a bevel, I just ported a bit and then made a bevel to the edge of the template. Also the whole thing was port matched to the exhaust sleeve.
I did the whole thing with dremel and carbide bit. The cast iron cuts nicely with dremel, but the aluminum rotor housings I found was the hardest. It's just too slow with a dremel.
160 Km as of today.
Dude,
Get those KM racked up. Come up to visit jay and I. By the time you make it back home you will have broken in the engine.
Congrats on building your own car. Can't wait to see it and hear it.
Get those KM racked up. Come up to visit jay and I. By the time you make it back home you will have broken in the engine.
Congrats on building your own car. Can't wait to see it and hear it.
Not much to hear, that is the funny part. His car sounds quieter than stock driving around with the full RB Turbo Back Exhaust.
The only real tell-tale sign of the HBP, is the fact that it doesn't like being under 2k rpm...
The only real tell-tale sign of the HBP, is the fact that it doesn't like being under 2k rpm...
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Just did an oil change today at 300 km, nothing unexpected. Cold starts are getting much better now, it fires on the second crank attempt, and starts on the third. We're still toying with the maps(I think it just needs more priming).
Looks like the car likes to be rich(like sub 14 AFR under vacuum) at low rpm, the car bucks violently if the AFR is too lean.
Also of note is that I will probably soon reinstall the stock shroud fan. On the way home today in traffic coolant temps hitting 95. The 1500 rpm idle is the main contributor to that problem I'm sure.
Forgot to mention the motor has new RA apex seals, and everything else reused. I didn't use the RA apex seal springs however, due to reports of them being weaker than mazda ones.
As for frank and his compression numbers, i'll check once breakin is complete.
Looks like the car likes to be rich(like sub 14 AFR under vacuum) at low rpm, the car bucks violently if the AFR is too lean.
Also of note is that I will probably soon reinstall the stock shroud fan. On the way home today in traffic coolant temps hitting 95. The 1500 rpm idle is the main contributor to that problem I'm sure.
Forgot to mention the motor has new RA apex seals, and everything else reused. I didn't use the RA apex seal springs however, due to reports of them being weaker than mazda ones.
As for frank and his compression numbers, i'll check once breakin is complete.
hehe .
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