Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: chris on January 04, 2005, 05:56:35 PM

Title: Finally Dyno\'d my FD
Post by: chris on January 04, 2005, 05:56:35 PM
After falling out with my FD back in the summer (after it sh@t itself hours before TOTB) I finally put some TLC in and then drove down to Reworx Chrismas eve to finally get a power figure from it. For those of you that don\'t know the car,  I built a dual turbo setup, constructing my own bespoke manifold and downpipe. I used two hybrid turbo\'s, that I made up from turbo II compressors and 12a turbo exhaust housings (AR 0.55) I ported the engine (developing my own port design) the intercooler is also a bespoke unit which I was developing for my old company (sensetuning) before my full time job took over all my spare time.

Anyway the rest of the engine setup is:
Power FC
Greddy profec B boost controller
Sensetuning sandwich plate injector assembly (4 x 550cc additional)
Sensetuning front mount intercooler
Apexi GT spec exhaust
Apexi twin chamber BOV
Bosch 044 fuel pump
Sensetuning swirl pot
HKS 11.5 plugs

The fuel system had been replaced sinse TOTB due to fuel pressure issues with the previous dual pump setup. We spent a few hours tuning and grinning more and more as the HP figures steadily climbed, for those of you that have tuned on the dyno, it is fairly addictive to keep increasing boost which I did, peak RWHP was 405 at 1.1Bar boost 310 FtLb torque, when I opted to turn up the boost controller to max and go for glory at which point she decided that that was enough at peak torque and 1.3 Bar boost she spat a tip or two out of the rear rotor, So after rebuilding it and increasing the exhaust ports slightly she is now running at a Bar and around 375 RWHP which is fairly lively in these conditions.  
:D :D

How do I get this figure installed into the database?
Engine built by Sensetuning
Tuned by RE Worx
Title: hp (flywheel)/boost
Post by: chris on January 04, 2005, 05:58:02 PM
hp (flywheel)/boost
Title: Finally Dyno\'d my FD
Post by: chris on January 04, 2005, 06:01:14 PM
RWHP/Torque:D
Title: Finally Dyno\'d my FD
Post by: Timrxmotors on January 04, 2005, 07:54:36 PM
Not bad,looks like you would have made more power if taken to 8000rpm.:) Did you have a rev limit?
Title: Finally Dyno\'d my FD
Post by: Carl on January 04, 2005, 09:53:49 PM
That is most impressive Chris,
Glad to see the figures.
Keep up the good work!
Regards
Carl
Title: Finally Dyno\'d my FD
Post by: Wav on January 04, 2005, 11:22:28 PM
Great stuff Chris, keep us upto date on everything you do and put some pics up if you get chance:D

Regards,

Paul:)
Title: Finally Dyno\'d my FD
Post by: 20B_boy on January 04, 2005, 11:25:52 PM
Shame I missed this one, Geff said it felt very lively and that the work on the turbos was very nice :)
Title: Finally Dyno\'d my FD
Post by: DRAGON on January 05, 2005, 09:19:20 AM
Exellent results, good to see engine bay pic.
why did it blow at 1.3 bar, any ideas?
Title: Finally Dyno\'d my FD
Post by: chris on January 05, 2005, 10:00:36 AM
why did it blow at 1.3 bar, any ideas?

The only conclusion we can muster is that we reached the limits of pump fuel, and had a pre-ignition of fuel at max torque.
Prior to this there was very little knock recorded (around the 25 mark) fuel pressure was absolutely rock solid and AF’s were all very safe.
It may be, that the addition of water injection may help to cool the charge sufficiently to safely run 1.2ish but for now 1 – 1.1 will be fine
Title: Re: Finally Dyno\'d my FD
Post by: clive on January 07, 2005, 08:52:37 AM
Quote
Originally posted by chris


HKS 11.5 plugs

 


Hi Chris, good to see you have your car up n running with good power after the disapointment of last year, however please change yer HKS plugs WHILE YOU STILL HAVE AN ENGINE as they have killed two Rotarys that l know of due to bits falling in the Rotors, one being one of Gary Goodings.

Please see here ASAP for more detail ( look for my second and third post down) .

http://www.mazdarotaryclub.com/forums/showthread.php?s=&threadid=11407
Title: Finally Dyno\'d my FD
Post by: travellinbob on January 07, 2005, 07:46:35 PM
Hi Chris sounds like a very good setup, and not one that others have really seemed to develop. I have seen an RX4 sedan in OZ running twin turbo II turbos and I think it was also qute successfull at developing horse power. Perhaps not quite as much as yours though!
 I too would love to see pics of the setup if you feel like sharing.
  Cheers for the update. Michael.