323 BPT 1.8 Dyno Numbera

[Thxbrett]

Hey Guys. I have the numbers for my 1988 323 GT with the BPT 1.8 motor swap. The car made 237 horsepower at the wheels at 12PSI. Unfortunately it blew the transmission up on the 14PSI run and hence I don't have any numbers to report for the elevated boost runs. Derrick from Corksport is faxing me the sheet and I will try to get it scanned and post it. I am pretty bummed <BR>about the tranny but until he tears it down I am unsure as to why it blew? The car made peak horsepower at 5700RPM and peak torque of 228.7 pound foot at 4700RPM. If anyone wants a list of my mods just ask and I will post them. I will try agin next month for the 14PSI and 16PSI runs. Thanks Fellas.<P>Brett Payne<BR>Manager<BR>M2 Performance.

[OsoSlo z28]

yeah, i'd like to know what mods you have as well as your engine management set-up(fuel/boost) also, if you have these gauges, what was your fuel pres, egt, and oil pres. thanks.

[Thxbrett]

Here is a list of my mods:<P>1.8 BP Turbo Motor <BR>N/A Protege Head <BR>465CC Injectors <BR>HKS F-Con <BR>ECU Chip <BR>Apexi AVC-R <BR>HKS Powerflow Intake <BR>3rd Gen RX-7 Fuel Pump <BR>Custom 2.5Inch exhaust and downpipe <BR>Garrett t3/4 Hybrid Ball Bearing Turbo(rated at 565CFM) <BR>M2 Large RX-7 Intercooler(3.5"thickx13"highx24"long) <BR>Blow Off Valve <BR>Centerforce Clutch <BR>Phantom Grip LSD <BR>Vr4 Brake Upgrade <BR>Tockico Struts <BR>Ground Control Coilovers <BR>Corbeau Racing seats <BR>15x7 Wheels and 205/50/15 Toyo T1s's <BR>Japanese Front End <BR>Various gauges <BR>Aluminum Radiator <P>The car made 237 hp at 5700RPM and 228 pound foot torque at 4700RPM.<BR>Brett.

[OsoSlo z28]

did the t3/t4 mount to the factory manifold or did you have to have one made? also, what characteristics does the n/a head have that makes it a better choice over the stock gtx head?

[Thxbrett]

I had a custom Garrett Hybrid made that bolted up to the stock manifold. It was fairly expensive but it gives good gains without having to fabricate a new manifild. Here are some pictures of my car with a new Japanaese spec fron tend. It needs a paint job badly! AHHAH! <A HREF="http://photos.groups.yahoo.com/group/tu ... 23%2bGT%2b" TARGET=_blank>http://photos.groups.yahoo.com/group/tu ... 2bGT%2b</A> 1.8%26.src=gr%26.view=t<P><BR>Brett.

[OsoSlo z28]

hey, the link didn't work. what did they do to fit the turbo? weld a compatible flange to it? also, what was your reason behind the n/a head? thanks.

[Thxbrett]

Thats strange the link works for me? I had them custom machine the VJ-20 to fit the Garrett GT30 catridge inside and then mate it up to the stock housing and manifold.<BR>Brett.

[Thxbrett]

Also the N/A head flows much better than the regular BPT head. In fact it looks almost the same as the rare 323 GTR head!<BR>Brett.

[ProtegeSTS]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Thxbrett:<BR><STRONG>Also the N/A head flows much better than the regular BPT head. In fact it looks almost the same as the rare 323 GTR head!<BR>Brett.</STRONG><HR></BLOCKQUOTE><P><BR>The GTX head and the NA head ARE THE SAME. Sorry to disappoint you, but even the cams are basically the same, but with different base timing.

[Thxbrett]

Hey Jesse talk to Derrick at Corksport about the heads. The BPT is a little more restrictive. Have you seen both of these heads in person?<BR>Brett.

[ProtegeSTS]

i have a pretty extensive photo library of both heads, and have been talking to the Turbo GT guys for a couple of years now, as well as Braden, so im fairly confident that im right here..... nobody has been able to give firm specs on the GTX cams either, so to the best of our knowledge, they are the identical to the NA cams, as visual inspection wont help. Only the GT-R head is an improvement over the other two heads, with the larger sodium valves and more turbo oriented cams.

[Thxbrett]

Hey 007 thats what I had done. I am sorry I did not explain the process correctly. Email me if you have any questions about the swap.

[Thxbrett]

I am running it at 8PSI as I have way to much wheelspin even at that power level. I have not tracked the car yet but I am afraid I will be hard pressed to break a 13 second time as the car has zero traction. The turbo is the GT30 hybrid which is good up to 25PSI.<BR>Brett.