JamieP Posted March 27, 2007 Share Posted March 27, 2007 I get a lot of pm's asking about the GT4088 spool time so i had a little play on the motorway today. Please try the same and post up your results, would make a nice thread for reference to other singles. JamieP GT4088 (non water cooled) All in 6th gear. Starts making positive boost from 2000rpm Makes 0.5bar at 2900rpm Full boost of 1.5bar at 3250rpm Jonty is using the GT4088R, his spools a bit better than mine, now i have read that the greddy inlet im running can effect spool, if its that that makes the difference or if its the dual ball bearing water cooled R version that is doing it i dont know. Jonty GT4088R In 6th gear Full boost of 1.6bar at 3100rpm I hope this thread will help. regards Jamie:) Quote Link to comment Share on other sites More sharing options...
Guru Posted March 27, 2007 Share Posted March 27, 2007 Just needed the excuse didn't you Jamie lol Those are some lovely spool up times though.... Quote Link to comment Share on other sites More sharing options...
Matt H Posted March 27, 2007 Share Posted March 27, 2007 yeah thats very impressive for a larger single. Quote Link to comment Share on other sites More sharing options...
Stonkin Posted March 27, 2007 Share Posted March 27, 2007 would have been nice to know some stats pre engine build Jamie. Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted March 27, 2007 Share Posted March 27, 2007 Thats rather impressive Quote Link to comment Share on other sites More sharing options...
Alex Posted March 27, 2007 Share Posted March 27, 2007 Is that from an AEM data log or by eye? Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 would have been nice to know some stats pre engine build Jamie. I dont think the engine build woud make much difference to the spool time mate. Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 Is that from an AEM data log or by eye? By eye, i may be able to get some datalogs, ill see what i can do next time i see Dan. Quote Link to comment Share on other sites More sharing options...
Stonkin Posted March 27, 2007 Share Posted March 27, 2007 I dont think the engine build woud make much difference to the spool time mate. would it not affect it at all mate? ok, i'll shutup now Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 27, 2007 Share Posted March 27, 2007 either your turbo's arent genuine garrett wheels or have a funny trim, or there is something wrong with you Rev counter, as that in no way reflects the results I saw with a GT40R88R on a VVTi car Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 either your turbo's arent genuine garrett wheels or have a funny trim, or there is something wrong with you Rev counter, as that in no way reflects the results I saw with a GT40R88R on a VVTi car Pop round Terry, ill take you for a spin:) My turbo came from michel lane and jontys came from ebay.com, both have non divided housings. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 27, 2007 Share Posted March 27, 2007 rather see some datalogs mate, but i may take you up on the offer. BTW I assume it was on a flat road, and not on an incline? Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 rather see some datalogs mate, but i may take you up on the offer. BTW I assume it was on a flat road, and not on an inclne? Pretty flat id say, I got better results doing it from almost tickover as opposed to starting at 2.5k... if i started at 2.5 it was full boost about 3.5k. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 27, 2007 Share Posted March 27, 2007 that really is very odd, with the VVTi cam intake timing, my 4088R just out spooled a T67DBB on a non VVTi car Any incline will make the car boost sooner Quote Link to comment Share on other sites More sharing options...
Alex Posted March 27, 2007 Share Posted March 27, 2007 The rev counters arn't reliable enough...so can't wait to see an actual datalog and actual data. Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 Just had a look through my charts and this is the only chart i have showing boost, its an old one from when i was running it in, 0.85bar (wastegate) done in 5th gear, obviously would be better if done in 6th;) What revs does a T67 hit full boost in top by? Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 This one is with 60 shot nos and 2 degree retard at 1.4bar (was peaking at 1.5 and dropping back to 1.4), you can see when i hit the nos at 5500rpm:) Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 The rev counters arn't reliable enough. Yea possibly, my speedo over reads 15mph when compared to my satnav. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 27, 2007 Share Posted March 27, 2007 Jamie look how different a GT35R curve looks to yours. or a PHR GT60 of Wez's http://www.mkivsupra.net/vbb/vbpicgallery.php?do=big&p=4672 Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 Jamie look how different a GT35R curve looks to yours. [qimg]http://i15.photobucket.com/albums/a391/VVTiSupra/BAD35RRWHP.jpg[/qimg] or a PHR GT60 of Wez's Mine is with 2 degree of retard;) yea i know the phr/gt35 are great tubbys, as i said before jakes murders mine till 5k on the dyno prints. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 27, 2007 Share Posted March 27, 2007 my point is the GT35R would make full boost around the 3k mark in 6th, and you can see how much more aggressive the curve is. Your 2 degree retard would not make the curve that much more aggressive. My car was retard 2 degrees for road use too for safety. Quote Link to comment Share on other sites More sharing options...
JamieP Posted March 27, 2007 Author Share Posted March 27, 2007 The 2 degree retard made a huge difference, the car felt dead, look at the difference in my two graphs, one is 0.85bar and at 4000rpm i have more power than at 1.4bar and 4000rpm 2 dgree retard. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 27, 2007 Share Posted March 27, 2007 I should also point out that a GT35R would make boost even faster if it were dyno'd in 5th instead of 4th. I am a bit lost by the 2 degree bit, so the first graph wasn't pulling 2 degrees? Can you not see how much faster spooling the GT35R/GT60 seems to be by the graphs. Quote Link to comment Share on other sites More sharing options...
Gazboy Posted March 27, 2007 Share Posted March 27, 2007 Would it make a difference that his graph is for 0.5 bar ? Nice to see Jamie's keeps pulling at high rpm's though- much like an M3 engine. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted March 27, 2007 Share Posted March 27, 2007 LOL we will go around in circles here. Please post up some road logs when you get a chance. Just so you can see how Ian C's T67 P trim was before he went to the faster spooling T67DBB Quote Link to comment Share on other sites More sharing options...
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