Meeky Moose Posted December 10, 2005 Share Posted December 10, 2005 don't know if any of you turbo guys have done this but... when the engine was put back together in my wagon, a set of carb cams were used instead of the turbo cams.. the carb cams had a higher lift and longer duration.. in order to get it to run right, i turned the disty as far advanced as it will go without takin it out and turning it a tooth.. now this puts it so far past the 20 degree mark its not even funny.. maybe 35 or 40 degrees? either way everytime i would advance it more my gas mileage goes up and so does power... no pinging or funny noises at all, just nice and smooth.. gas mileag is up from 10mpg to about 16 or 17 now.. i'm wondering if the carbed cams would really make that much difference in timing? Link to comment Share on other sites More sharing options...
subyrally Posted December 10, 2005 Share Posted December 10, 2005 the only thing i can see is that the carb cams would most likely have more overlap betweeen the intake and exhaust lobes. turbo cams tend to have much less overlap to retain the extra pressure from the turbo. if there is too much overlap, the boost will jus be waisted through the exhaust, not pressurizing the cylenders. or something like that, i just woke up and am still loopy. Link to comment Share on other sites More sharing options...
Subarian Posted December 10, 2005 Share Posted December 10, 2005 Not to rain on your parade, but 17 mpg for a sube isn't very good. You should be getting at least 25. Link to comment Share on other sites More sharing options...
idosubaru Posted December 10, 2005 Share Posted December 10, 2005 i don't know if yours is FI or not..i think it is? i pulled my motor, resealed it and couldn't get it started after reinstalling. no CE light, no trouble codes, everything seemed to test okay. i actually got it to start and run only by advancing it an entire tooth....timing was off the charts and couldn't figure out why. ended up driving it like this for a couple months. didn't drive great, but it did drive fine, no back firing, no pinging, a little on the slow and less mpg side. i finally started troubleshooting it again and when i swapped distributors the problem went away. set it to normal timing with the new (used) distributor and ran perfect with stock timing. i'm assuming the crank angle sensor was bad....but who knows, i can't figure why it ran fine with the timing all jacked up...the distributor failed in some way. that was a few years ago, same thing happened a month ago, car wouldn't start after setting for a couple weeks while doing some tune-up stuff to it. everything tested fine, just woudln't start. distributor seemed to test fine, no CE light. swapped in another distributor and it fired right up? both times i had a failed distributor was while the car was off the road for an extended period...maybe existing corossion got worse internally, i have no idea, but very strange to me that i lost two distributors, neither while using the vehicle, but both while the vehicles was taken off the road for tune/up or repairs for a few weeks. Link to comment Share on other sites More sharing options...
Meeky Moose Posted December 11, 2005 Author Share Posted December 11, 2005 lol if you had this under your hood you'd be happy with 17mpg, specially when it'll outrun anything soob ever made with the exception of an sti.. i know the gas mileage is bad for a turbo ea82 car.. but thats not what my question was really about here.. but thanks for raining on my parade yeah, its mpfi and turbo... maybe there is something wrong with the disty.. would seem kinda odd to me tho.. its was also fairly new:-\ Not to rain on your parade, but 17 mpg for a sube isn't very good. You should be getting at least 25. Link to comment Share on other sites More sharing options...
Frank B Posted December 11, 2005 Share Posted December 11, 2005 That red setup looks familiar, did you get that from Scrapdaddytatum? If so, 17mpg is good for that engine!! Link to comment Share on other sites More sharing options...
Meeky Moose Posted December 11, 2005 Author Share Posted December 11, 2005 Yes Frank B i know thats about all i'm gonna get outa it in town, lol... Link to comment Share on other sites More sharing options...
Frank B Posted December 11, 2005 Share Posted December 11, 2005 I picked up a weber and disty for an EA81 from him last winter and he had that beast sitting out of the car. Did you get the tranny too? Link to comment Share on other sites More sharing options...
Frank B Posted December 11, 2005 Share Posted December 11, 2005 I just re-read your posts and wondered if you have tried 93 octane AND octane booster? Doesn't that thing have higher compression pistons? And are you sure that the disty wasn't put in a tooth or more off? If you feel anxious enough to replace those cams with turbo ones let me know, I might be able to hook you up with some. Link to comment Share on other sites More sharing options...
BoostedBalls Posted December 11, 2005 Share Posted December 11, 2005 24 deg is a good starting point for a turbo 4 banger with stock non-turbo cam profiles. I run turbo VWs with the timing LOCKED at 24 degrees and the power is more than double the stock power at 7 or 8 psi. If it were me, I would put the turbo cams back in it. After a regrind of course. Link to comment Share on other sites More sharing options...
4WDFrenzy Posted December 12, 2005 Share Posted December 12, 2005 I'm with everyone else on this one. Get some turbo cams back in that thing. When I first got my GL-10 legal and everything, I took it on a trip down to Dallas(which is a 2-1/2 hr drive one way from Wichita Falls,TX). I had a full tank of gas when I started my trip, and had only used 1 bar(Digital dash) on my fuel gauge when I got back home. And I was running 11psi of boost on stock VF7 turbo, with a cat(CATCO) + 2-1/4" exhaust, stock turbo cams, Iridium plugs, Adjustable FPR(42psi), new fuel filter, custom 3" Fenderwell intake system w/ stainless mesh cone filter, and top mount intercooler(Starion). The sad thing is, with Dallas traffic during the time of day I went, I had to dog my poor car almost the whole time I was on my way(following friends to a dyno day competition & car show). So yeah, I would definitly put some turbo cams in, even regrinds. Patrick Link to comment Share on other sites More sharing options...
Meeky Moose Posted December 12, 2005 Author Share Posted December 12, 2005 engine, rx trans, lsd rear, the hole shebang.. all i run in it is 93 octane... its never once clattered, rattled, or made any other grunts, groans, squeeks, etc.. even advanced all the way..... although i did my fillup with this timing setting and mileage acctually went down 1mpg.. so that tells me the disty is in the correct spot, just not set right.. gonna retard it in the morning and try again.. well there are no timing marks on this flywheel.. so i can't set the timing like everyone else can.. the flywheel wieghs like 8 or 10 lbs.. thats why theres no marks, lol.. theres red paint where the old mark was thought to have been (20 degrees) but it gets 10mpg and my SPFI DL wagon would outrun it at 22 degrees, lol.. guess i need to save some money for a set of delta cams... might free her up to where she should be Link to comment Share on other sites More sharing options...
NorthWet Posted December 12, 2005 Share Posted December 12, 2005 You really need to figure out your ignition timing before you go messing around with cams and such. There are various means to find TDC, and everything else is just math and measuring for the marks. Link to comment Share on other sites More sharing options...
Meeky Moose Posted December 16, 2005 Author Share Posted December 16, 2005 well i;m certain its fixed now.. is gettin a solid 17mpg around town.. and for this setup i think thats prolly all i'm gonna get outa it.. haven't been on a long trip but it should be better cause at 65 mph it'll acctually cruise now without the turbo bein spooled.. as for the timing i got the old dl up to the house, checked its timing (this is assuming the disty is in correctly. it was set at about 23 degrees.. so i went over to the turbo wagon and moved the disty to the same spot in the adjustment range.. and seems to have fixed the issue with the timing.. running awsome now and not super horid on gas.. cars been alot of fun in this damned ice storm now to wire up the diff lock and i'll be set Link to comment Share on other sites More sharing options...
Frank B Posted December 17, 2005 Share Posted December 17, 2005 Wire up the diff lock? To a switch or to make it manual? I thought of useing a choke cable to adapt mine to a manual control. The light flickers and I haven't figured out why. Link to comment Share on other sites More sharing options...
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