cleland Posted January 25, 2007 Share Posted January 25, 2007 What sort of power and boost, does the standard fuel rail and a 255 pump start to struddle. I have 800 injectors and the fueling is good at 1.2 and did around 500hp, we then upped the boost to 1.4 and it did around 525hp but i was a bit lean and no matter what we did with the figures we couldnt get the fueling richer. Quote Link to comment Share on other sites More sharing options...
Robert Posted January 25, 2007 Share Posted January 25, 2007 i think the walbro is only good for about 500bhp, whats your fuel pressure? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted January 25, 2007 Share Posted January 25, 2007 Does sound like a supply problem, maybe an uprated fuel rail and lines are called for, could try upping the fuel pressure slightly. Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 Presumably that flywheel? what were your wheel figures, what transmission do you have and what AFR's were you seeing at peak? Whats your FP? Terry had a stock rail with huge injectors on the purple car and apparently tested fine at a 'real' 600 odd bhp. He's also said mine will be fine on 800's on the stock rail and a T67dbb. Its not as simple as saying what power is it good for, the entire setup needs to be considered to give an balanced answer Quote Link to comment Share on other sites More sharing options...
cleland Posted January 25, 2007 Author Share Posted January 25, 2007 It was ok last month but We ran out of time tonight, but thats the first job tomorrow. Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 It was ok last month but We ran out of time tonight, but thats the first job tomorrow. What is? Quote Link to comment Share on other sites More sharing options...
cleland Posted January 25, 2007 Author Share Posted January 25, 2007 Presumably that flywheel? what were your wheel figures, what transmission do you have and what AFR's were you seeing at peak? Whats your FP? Terry had a stock rail with huge injectors on the purple car and apparently tested fine at a 'real' 600 odd bhp. He's also said mine will be fine on 800's on the stock rail and a T67dbb. Its not as simple as saying what power is it good for, the entire setup needs to be considered to give an balanced answer Yes fly figs, the pump is a 255lpl walbro with 800 injectors. At 1.4 it was creeping towards the 12s. Quote Link to comment Share on other sites More sharing options...
cleland Posted January 25, 2007 Author Share Posted January 25, 2007 What is? fuel pressure, but its still on the standard fpr. Quote Link to comment Share on other sites More sharing options...
Pig Posted January 25, 2007 Share Posted January 25, 2007 Std fuel rail will be fine, best off going duel feed and 2 pumps, should sort it no prob. In my "not so knowledgable" opinion ofcourse. Edit: Try putting on an aeromotive FPR that should do the trick! Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 Yes fly figs, the pump is a 255lpl walbro with 800 injectors. At 1.4 it was creeping towards the 12s. And the other Q's? Whats your fuel pressure, thats the most basic thing to check before taking a car on the rollers. If its slightly up or down on target then it'll screw the whole map. What ECU do you have and who's mapping it? Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 fuel pressure, but its still on the standard fpr. So you don't know the fuel pressure yet. There's not much point spending money on mapping or RR sessions Get a sensor in there or perhaps something like the aeromotive (note - not a rising rate one!) and fp gauge too and tune to that. What was your turbo again? I have a feeling its a huge one..? Quote Link to comment Share on other sites More sharing options...
cleland Posted January 25, 2007 Author Share Posted January 25, 2007 Std fuel rail will be fine, best off going duel feed and 2 pumps, should sort it no prob. In my "not so knowledgable" opinion ofcourse. Edit: Try putting on an aeromotive FPR that should do the trick! Is that 2 walbros in line, anyone got any pics. Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 Erm, Cleland, according to your garage you have a GT45...!!!!! You need a full fuel system for something that size, the stock system is totally inadequate for that! You’ll need a total system, new rail, top feed injectors, FP damper bypass, twin pumps, -6/-8 lines lines, uprated filter, etc, etc. I'm amazed you made it to 1.2 bar without it detting, just goes to show how far the stock system can be pushed! Quote Link to comment Share on other sites More sharing options...
cleland Posted January 25, 2007 Author Share Posted January 25, 2007 So you don't know the fuel pressure yet. There's not much point spending money on mapping or RR sessions Get a sensor in there or perhaps something like the aeromotive (note - not a rising rate one!) and fp gauge too and tune to that. What was your turbo again? I have a feeling its a huge one..? Who does the aero fpr at a good price. The mappin is a on the standard ecu with tectom board and software it runs mint in closed loop. Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 Who does the aero fpr at a good price. The mappin is a on the standard ecu with tectom board and software it runs mint in closed loop. Fucking hell! Stop with the modifications now! I'm well and truly gobsmacked, who is advising you on this build? Quote Link to comment Share on other sites More sharing options...
cleland Posted January 25, 2007 Author Share Posted January 25, 2007 You used tectom before H. Quote Link to comment Share on other sites More sharing options...
Pig Posted January 25, 2007 Share Posted January 25, 2007 Erm, Cleland, according to your garage you have a GT45...!!!!! You need a full fuel system for something that size, the stock system is totally inadequate for that! You’ll need a total system, new rail, top feed injectors, FP damper bypass, twin pumps, -6/-8 lines lines, uprated filter, etc, etc. I'm amazed you made it to 1.2 bar without it detting, just goes to show how far the stock system can be pushed! The fuel rail can be up to the job, jake is running a stock rail and not seeing any problems. However they are very little money (im changing mine ) Who does the aero fpr at a good price. The mappin is a on the standard ecu with tectom board and software it runs mint in closed loop. Most traders are about the same about £150 plus supra fittings iirc. Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 You're using an enormous turbo and a piggyback to try and control it. Anything more than T67 size is going to be out of range for the best piggy backs. Anyway, that aside (as its not as important as the fuel system), you're trying to use the stock fuel rail and fpr (which indicates the stock bypass damper, fuel filter and lines). Thats just madness on a massive turbo like that. As mentioned who is advising you on this? Would like to know for future reference! Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 The fuel rail can be up to the job, jake is running a stock rail and not seeing any problems. However they are very little money (im changing mine ) Jon, I like you but your tech advice ain't the best mate On this size turbo the stock system isn't going to be any good. Look at DJ Craigs car and see what he needs to run pump gas. Quote Link to comment Share on other sites More sharing options...
cleland Posted January 25, 2007 Author Share Posted January 25, 2007 You're using an enormous turbo and a piggyback to try and control it. Anything more than T67 size is going to be out of range for the best piggy backs. Anyway, that aside (as its not as important as the fuel system), you're trying to use the stock fuel rail and fpr (which indicates the stock bypass damper, fuel filter and lines). Thats just madness on a massive turbo like that. As mentioned who is advising you on this? Would like to know for future reference! The tectom has provisions for single conversions, which bit is out of range. ps. i am always gratefull for help and advise, but no slaggin Quote Link to comment Share on other sites More sharing options...
Homer Posted January 25, 2007 Share Posted January 25, 2007 The tectom has provisions for single conversions, which bit is out of range. ps. i am always gratefull for help and advise, but no slaggin I'm not slagging as you call it.. its just that I'm amazed you have bought a turbo like that and have not provisioned for other aspects such as the engine and fuelling. From what you've listed so far you have an incompatible setup that will not work without significant investment Quote Link to comment Share on other sites More sharing options...
Pig Posted January 25, 2007 Share Posted January 25, 2007 Jon, I like you but your tech advice ain't the best mate lol, fair point Listen to homer, my speciality is killing engines (let me know if you need any help with that!) Quote Link to comment Share on other sites More sharing options...
Guest s13eater Posted January 26, 2007 Share Posted January 26, 2007 well done. heard it was ballistic, Quote Link to comment Share on other sites More sharing options...
Jake Posted January 26, 2007 Share Posted January 26, 2007 What is the supposed problem with the stock fuel rail and stock FPR exactly? (not that I have the stock FPR (or pulsation damper) but would be quite happy to have them) At least the stock rail is a known good quality item and won't piss fuel all over the place like some of the so called 'upgraded' fuel rails. (Ask Tannhäuser and JamieP about that) If the stock rail isn't restricting the fuel flow then why change it? Seems to me that there's way too much changing stuff for the sake of it when the stock item is plenty good enough - and often better quality than the aftermarket alternative. Quote Link to comment Share on other sites More sharing options...
Homer Posted January 26, 2007 Share Posted January 26, 2007 What is the supposed problem with the stock fuel rail and stock FPR exactly? (not that I have the stock FPR (or pulsation damper) but would be quite happy to have them) At least the stock rail is a known good quality item and won't piss fuel all over the place like some of the so called 'upgraded' fuel rails. (Ask Tannhäuser and JamieP about that) If the stock rail isn't restricting the fuel flow then why change it? Seems to me that there's way too much changing stuff for the sake of it when the stock item is plenty good enough - and often better quality than the aftermarket alternative. I'm not saying there's a problem with the stock rail at least with the spec someone like me has. Cleland though has a maahoosive turbo that even at 1.2 bar is going to need enormous fuelling. The guy that owns the DJ Craig car (I forgot his name) said he needed 1000cc injectors to run it just on optimax at 1.4bar. Now cleland has some signal fudger that can run these injectors at 1.4bar on such a huge turbo with a STOCK rail? Maybe he has some secret that all the tuners for the past few years have missed and managed to retain the stock rail and pretty much all the stock system? Time will tell I guess. Not a dig at your reply Jake, but the posts by Cleland are in complete opposition to all advice I've received here and else ware since owning my car Quote Link to comment Share on other sites More sharing options...
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