Bluemoon Posted July 18, 2009 Share Posted July 18, 2009 As the title says, what's your tubo boost gauge reading? (300tdi engine only) and is it for racing or general motoring/ motorway miles/ towing . I want to see what is the average or what the engine can reliaibly run at, without any mods to the cylinder head, without people saying don't do that! , just for the hell of it. If you have a EGT gauge, what is the max temp you have gained , and is the turbo boost related, have you turned the boost back down. Please only from experience. cheers Brian Quote Link to comment Share on other sites More sharing options...
white90 Posted July 18, 2009 Share Posted July 18, 2009 18psi on calibrated gauge and 704 Celsius remove the plastic collar under the diaphram in the FIP and EGT rockets. losing a mm off of this improves pick up no end and limits EGT racing. Quote Link to comment Share on other sites More sharing options...
Bluemoon Posted July 19, 2009 Author Share Posted July 19, 2009 whats your motor used for and how long have had the mod Brian Quote Link to comment Share on other sites More sharing options...
white90 Posted July 19, 2009 Share Posted July 19, 2009 I use the 90 for everything motorways/touring towing a trailer and previously a caravan and of course winch challenges where I drive to and from the events, last one was in Kirton approx 240miles each way furthest it has been is Northern Spain/France and Belgium latest mods approx 2years prior to that I ran it at 21psi for 4years but melted a piston(unrelated) as number 4 injector was leaking. Quote Link to comment Share on other sites More sharing options...
simonb Posted July 19, 2009 Share Posted July 19, 2009 As the title says, what's your tubo boost gauge reading? (300tdi engine only) and is it for racing or general motoring/ motorway miles/ towing . I want to see what is the average or what the engine can reliaibly run at, without any mods to the cylinder head, without people saying don't do that! , just for the hell of it. If you have a EGT gauge, what is the max temp you have gained , and is the turbo boost related, have you turned the boost back down. Please only from experience. cheers Brian Max 630C, standard factory boost of 1.1 bar although that is only achieved with full throttle. Most of the time don't need to exceed 0.7 bar for swift performance. 65mph on the motorway gives 0.5 bar and around 385C Quote Link to comment Share on other sites More sharing options...
RedLineMike Posted July 19, 2009 Share Posted July 19, 2009 22-24 psi 200 tdi defender (made approx 150bhp on dyno) Egts were 700-950c+ when driven hard, when driven steady would do 550c ish Used for winch challenges and daily drive Have just converted to auto with a 300tdi turbo on the 200 tdi engine, not had a chance to refit egt probe yet but seatofpants dyno indicates quicker than previous setup and currently running standard boost,should get it on the 4wd dyno one night this week . Mike Quote Link to comment Share on other sites More sharing options...
BogMonster Posted July 19, 2009 Share Posted July 19, 2009 950c+ when driven hard Boom Quote Link to comment Share on other sites More sharing options...
Lara Posted July 19, 2009 Share Posted July 19, 2009 Yes, that is extremely high if deg C, general rule 750 at tops for safe use. Although high boost does not = high EGTs many times just raising the boost without adding fuel will actually lower EGT as the extra air acts to cool things down! this is one of the reasons that most factory diesels will benefit from extra fuel, because automotive factory settings are anything up to 60% lean!! Boost itself does not necessarily give lower reliability fro your engine either! however anything over 1.8 bar will certainly play a role in turbo life! Lara Quote Link to comment Share on other sites More sharing options...
RedLineMike Posted July 19, 2009 Share Posted July 19, 2009 Boom means i can do this dont have it that hot all the time however i havent had a turbo or headgasket failure yet (hmmm thats knacked that run of luck) However having access to a 4wd dyno helps with the fine tuning so it very rarely now goes that high Quote Link to comment Share on other sites More sharing options...
Bluemoon Posted July 19, 2009 Author Share Posted July 19, 2009 SootySport, that is beautifull. Brian Quote Link to comment Share on other sites More sharing options...
nicks90 Posted July 20, 2009 Share Posted July 20, 2009 holy cow batman! if my turbo glowed like that i would have a complete panic attack! mine is running standard boost (but boost is measured from back of inlet manifold) and the fuelling turned up a little bit for added towing power. Max EGT gas been 680C on a long motorway hill towing the pikeywagon. Quote Link to comment Share on other sites More sharing options...
rusty_wingnut Posted July 20, 2009 Share Posted July 20, 2009 boost: 1.2 bar @ inlet manifold on overboost (brief around 1 sec max) 1 bar at max boost after 0.5bar cruising, rarely below unless the throttle is only slightly off tickover. 300tdi with VNT & 45 degree turn on boost diaphragm. EGT unknown but assumed similar to standard 300tdi as no extra boost is being used for long periods. leaves a standard 300 for dead, Td5s are also slower (i'm yet to come across a tuned one though). The extra torque makes it alot easier to drive, it will pull higher gears from lower revs. I know of a 300tdi with max achieveable fuelling on the diaphragm about 2 turns on the other fuelling screws and 18psi @ wastegate, it smokes like a traction engine but goes like hell! Quote Link to comment Share on other sites More sharing options...
rusty_wingnut Posted July 22, 2009 Share Posted July 22, 2009 just been out after some fiddling on the VNT, it ran with 1.5bar over boost and around 1.2 there after. My fuelling setup is somewhere about right here going on a visual smoke test. Quote Link to comment Share on other sites More sharing options...
Aragorn Posted July 23, 2009 Share Posted July 23, 2009 rusty: Boost alone doesnt cause high EGT's, Fuel does. And infact, adding more boost can help lower high EGT's quite a lot of the time. 1.2bar is mince, get it wound up Quote Link to comment Share on other sites More sharing options...
kev td5 Posted July 24, 2009 Share Posted July 24, 2009 21.5 psi im running on my vnt at full boost. Quote Link to comment Share on other sites More sharing options...
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