Muffleman Posted March 20, 2007 Share Posted March 20, 2007 I run 1.2bar normally and it's still daft fast. Very true, a well setup 'sensible' sized single at 1.2bar will keep your attention and leave most things for dust. Shame you're so far away otherwise I would've said come to the turbofit RR day on 29th April, I'm sure we could get you a ride in a single Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 Thanks for the info there Ian, But i never said 600would be a let down, there or there abouts would be my maximum powerfigure, I'd be slightly afraid that after having this power for a while I would want to detune the car. This would be the BL T67DBB you would be referring to...I've seen the arguments, not quite sure what to make of it other than opionions differ and a kit mix and match seems ot be the best option if I was using that. I dont expect the car to be that responsive until after the rebuild, but I just dont want a laggy turbo, or a big turbo that can take 800hp when I have no intention of achieving that figure, it just doesnt look that much use on these roads and one this car. Isnt a smaller rated dbb turbo that would let me achieve say 550rwhp max gonna be less laggy and more use? p.s if I was to get a T04Z for the same price or thereabouts as the T67 Dbb should I go for it? but then again, if I can achieve the powerfigure with a smaller turbo, maybe slighlty less lag...I hate choice! Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 20, 2007 Share Posted March 20, 2007 Isnt 600bhp at the fly a little discouraging after having a full rebuild AND Nos? Its only a 67 shot nos, i could go for a bigger turbo and make more bhp if i wanted but from what ive seen its not all about the final figure its about how it drives on the rd and im very happy, with the T88 i had more power but as everyone thats been in the car before and after will tell you its miles quicker as it is now with less power:) Quote Link to comment Share on other sites More sharing options...
AlanM Posted March 20, 2007 Share Posted March 20, 2007 Its only a 67 shot nos, i could go for a bigger turbo and make more bhp if i wanted but from what ive seen its not all about the final figure its about how it drives on the rd and im very happy, with the T88 i had more power but as everyone thats been in the car before and after will tell you its miles quicker as it is now with less power:) Think I am sold on it anyway[GRIN][/GRIN] Quote Link to comment Share on other sites More sharing options...
Alex Posted March 20, 2007 Share Posted March 20, 2007 The T04Z is slower to spool and produces less BHP per psi than the T67, let alone the T67DBB! The T67DBB is the king of the street... The GT4088R is just behind...though possibly slightly more robust. Quote Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 20, 2007 Share Posted March 20, 2007 Jamie, was your 600 at the wheels or fly? Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 Its only a 67 shot nos, i could go for a bigger turbo and make more bhp if i wanted but from what ive seen its not all about the final figure its about how it drives on the rd and im very happy, with the T88 i had more power but as everyone thats been in the car before and after will tell you its miles quicker as it is now with less power Is that due to less lag and less wheel spin m8? So the T67DBB is the way forward...or the GT4088R? Do these run sufficiently on lowish boost i.e 1.2-1.4bar Apparently the HKS Ex. manifold and 50mm wastegate with these is a good setup for street can you's confirm? Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 20, 2007 Share Posted March 20, 2007 Is that due to less lag and less wheel spin m8? Mid range torque id say, comparing mine to jontys old t78 i was miles ahead till almost the rev limit when the t78 overtook, dont take a genius to work out what would be faster;) Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 20, 2007 Share Posted March 20, 2007 From what ive seen the phr stage 1 is a great little turbo, Dan overlaid mine and jakes on the screen today and his kicks mine in the balls till 5k when i overtake:) Edit, id imagine the vvti helps aswell but not sure? Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 What do you mean by take over? As in the dyno graph or on the road:d So question knowledgable folk...if I went with a BL T67DBB (which I think maybe too big) what injectors would I use? Stick with the 800CC's? who does good high impedance top feed 800's? HKS, Blitz, PHR? Quote Link to comment Share on other sites More sharing options...
Alex Posted March 20, 2007 Share Posted March 20, 2007 A T67 will be fine with 720-800cc injectors. It's the method of control that's critical and the AEM should be just the ticket. Quote Link to comment Share on other sites More sharing options...
Jake Posted March 20, 2007 Share Posted March 20, 2007 Blimey mate you're full of questions for someone who's just thinking about it at the mo. What do you mean by take over? As in the dyno graph or on the road:d He means on the Dyno plots. Both our cars were mapped at the same place by the same person. So question knowledgable folk...if I went with a BL T67DBB (which I think maybe too big) what injectors would I use? Stick with the 800CC's? who does good high impedance top feed 800's? HKS, Blitz, PHR? 800cc high/side PE's in the stock rail would be fine. That's exactly what I have in mine but I know I've got overhead to go bigger if I want. Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 So 800CC PE's on a HKS Fuel Rail would be fine then? Or do you think I should back it off to 650CC's for my goals? Just thinking about the post that if your injectors arent running at the recommended 85-90% duty cycle then the spray pattern can differ Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 Blimey mate you're full of questions for someone who's just thinking about it at the mo. I'm buying the fuel system in a couple of weeks m8, just dont wanna go wasting precious pennies! O.K so, 800CC Power Enterprise Injectors(Twin Hole,Brown) High Impedance, Top Feed HKS Fuel Rail Fuel Pump?? A Big Walbro FPR?? AEM or Aeromotive Powerhouse Racing Fuel Pressure Pulsation Dampener Bypass Line with Fuel Pressure Adapter(for my Defi) New Fuel Filter Anything Else? Quote Link to comment Share on other sites More sharing options...
Ian C Posted March 20, 2007 Share Posted March 20, 2007 I'd rather see someone asking lots of questions before shelling out than buying a shiny thing on one berk's recommendation and then trying to nail the rest of the car to it To answer a couple of the questions in no particular order: 650cc injectors are possibly a bit undersized for a T67 application. They are fine for a T61. "Just thinking about the post that if your injectors arent running at the recommended 85-90% duty cycle then the spray pattern can differ" - please link to that post! My word, what nonsense The duty cycle is how long the injector sprays for. The design and the fuel pressure affects the spray pattern. The T67DBB loves 1.2bar, in fact my wastegate spring is set to 0.8bar, and in winter it runs off that. At that level it's still strong (prob around 450-480bhp) but not fierce. JamieP has been there and done that with a big fat turbo, and old skool T88, and he's a power freak, and yet has downsized to a more "streetable" turbo and looks like he won't go back, so that should tell you a lot about how chasing ludicrous power figures is all well and good for boasting but a bit poo when actually driving Terry Saunders did the same and his T61DBB was a mad beast. So looking for drivability is a very laudable goal. I wouldn't go back to a non-dbb T67, no way. Having driven a T61, I'm impressed by the spool but it hasn't got enough top end whack to make me downsize I'm happy where I am. You have to pick The 67 makes the most power you'd ever want for a street car slap bang in the middle of it's efficiency range. 600bhpish is, in mine and several other experienced mamber's opinion, the most you'd want for a street car. You can trade off a faster spool for less overall power and it's all good, you just need to decide where you want to end up -Ian Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 Yes you speak good info! I know what I'll be buying now...are you running the T67DBB or the T67? Just thinking about the post that if your injectors arent running at the recommended 85-90% duty cycle then the spray pattern can differ" - please link to that post! My word, what nonsense The duty cycle is how long the injector sprays for. The design and the fuel pressure affects the spray pattern. Maybe it was something else that they were discussing, cant find the post, but I remember there was a flash player running a demo of the injectors spray pattern...anyone remember? Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 Oh and what trim would I be best getting if I want minimum of lag if it was the T67DBB? 0.58 A/R or 0.68 A/R? Quote Link to comment Share on other sites More sharing options...
Alex Posted March 20, 2007 Share Posted March 20, 2007 Ian uses the T67DBB on a 0.68exhaust A/R. But the dyno chart in his garage is on the old NON DBB T67. And don't confuse full boost with enough boost to get shifting, it already is well below 4000rpm! The PE HI Imp injectors won't fit an HKS rail - they are Side feed and the rail is top feed. Quote Link to comment Share on other sites More sharing options...
bolarbag Posted March 20, 2007 Author Share Posted March 20, 2007 Well anyone know a of decent top feed 800CC injector? Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted March 20, 2007 Share Posted March 20, 2007 Well anyone know a of decent top feed 800CC injector? *steps into heated discussion* The siemens 850s are pretty good, known for a good spray pattern *tips hat and steps back out* Quote Link to comment Share on other sites More sharing options...
Alex Posted March 20, 2007 Share Posted March 20, 2007 *steps into heated discussion* The siemens 850s are pretty good, known for a good spray pattern *tips hat and steps back out* Agreed. RC Engineering (rceng.com I think) make great one's too. Ian's 720's are RC's. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 20, 2007 Share Posted March 20, 2007 Siemens wont fit an HKS rail guys Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted March 20, 2007 Share Posted March 20, 2007 Siemens wont fit an HKS rail guys Good point, didnt see that part HKS rail may not be the best, what about the PHR rail? Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 20, 2007 Share Posted March 20, 2007 Yeah PHR rails are nice, HKS rails are good too, but you need the small neck injectors for them. Quote Link to comment Share on other sites More sharing options...
Ian C Posted March 20, 2007 Share Posted March 20, 2007 Yes you speak good info! I know what I'll be buying now...are you running the T67DBB or the T67? The DBB You may find this: http://www.mkivsupra.net/vbb/showthread.php?t=68090 interesting. You can see the performance of my rig in different gears, boost pressure, revs, road speed etc. -Ian Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.