SLOTH Snr Posted May 15, 2006 Report Share Posted May 15, 2006 Well we've been having trouble with the carb's on the 7k or so we thought. Finally got the motor in for a tighten down. It was suposed to happen at 600km's and Craig's managed about 1400. Okay our problem has been the motor is running rich at the lower revs but leans right out over 3500rpm When the rocker covers came off this morning you could see the inlet valves weren't level with the exhaust valves. It looks as if the wrong collets have been put in on the inlet. As I left the mechanic he was removing the heads to send to the engineering shop for them to fix. Atleast it isn't costing as it was thier mistake. Hopefully I can give a final report before I leave for Queensland. Quote Link to comment Share on other sites More sharing options...
love ke70 Posted May 15, 2006 Report Share Posted May 15, 2006 gotta love workshops eh? :D if this is your only problem thats pretty good then :( Quote Link to comment Share on other sites More sharing options...
madrolla68 Posted May 15, 2006 Report Share Posted May 15, 2006 Well we've been having trouble with the carb's on the 7kor so we thought. Finally got the motor in for a tighten down. It was suposed to happen at 600km's and Craig's managed about 1400. Okay our problem has been the motor is running rich at the lower revs but leans right out over 3500rpm When the rocker covers came off this morning you could see the inlet valves weren't level with the exhaust valves. It looks as if the wrong collets have been put in on the inlet. As I left the mechanic he was removing the heads to send to the engineering shop for them to fix. Atleast it isn't costing as it was thier mistake. Hopefully I can give a final report before I leave for Queensland. SO tell me how that is affecting your AFR's,spring pressure may be a little different but if the valve is still seating ,openeing and closing at the right timre then shouldn't make any difference. Quote Link to comment Share on other sites More sharing options...
SLOTH Snr Posted May 16, 2006 Author Report Share Posted May 16, 2006 Okay the inlet valves were sitting lower.Our thought was that the collet was thinner. This wasn't the problem after all The valves were made to suit the motor unfortunately someone forgot to hardface the inlet valves. The engineer is makeing a new set but it means another week without it. NOW WE SHOULD GET SOME REAL POWER! Quote Link to comment Share on other sites More sharing options...
SLOTH Snr Posted May 16, 2006 Author Report Share Posted May 16, 2006 Everything says we should get 120+hp. Just how much the + is we will find out. Desperately trying to do the dyno before I leave. Quote Link to comment Share on other sites More sharing options...
Boost+k Posted May 16, 2006 Report Share Posted May 16, 2006 sounds to me like you have the wrong needles in your carbs Quote Link to comment Share on other sites More sharing options...
madrolla68 Posted May 17, 2006 Report Share Posted May 17, 2006 Okay the inlet valves were sitting lower.Our thought was that the colletwas thinner. This wasn't the problem after all The valves were made to suit the motor unfortunately someone forgot to hardface the inlet valves. The engineer is makeing a new set but it means another week without it. NOW WE SHOULD GET SOME REAL POWER! So they weren't sealing then ey,low comp ,low vacuum that sort of thing. Quote Link to comment Share on other sites More sharing options...
SLOTH Snr Posted May 18, 2006 Author Report Share Posted May 18, 2006 (edited) Nah! Actually it was the opposite. They weren't opening properly. I will have to get the mechanic to explain it properly. We also thought it was wrong jets but with the inlet valves not opening properly it sort of explains it Edited May 18, 2006 by SLOTH Snr Quote Link to comment Share on other sites More sharing options...
madrolla68 Posted May 18, 2006 Report Share Posted May 18, 2006 Nah! Actually it was the opposite.They weren't opening properly. I will have to get the mechanic to explain it properly. We also thought it was wrong jets but with the inlet valves not opening properly it sort of explains it Ok I'm confused now,more info please Quote Link to comment Share on other sites More sharing options...
SLOTH Snr Posted May 18, 2006 Author Report Share Posted May 18, 2006 Don't worry so am I I will see exactly next week then I can explain better Quote Link to comment Share on other sites More sharing options...
madrolla68 Posted May 18, 2006 Report Share Posted May 18, 2006 Don't worry so am I I will see exactly next week then I can explain better Cheesr,I'm just trying to work out what exactly was wrong,because the engine was running already. Quote Link to comment Share on other sites More sharing options...
SLOTH Snr Posted May 28, 2006 Author Report Share Posted May 28, 2006 (edited) Ok we've got the car back. The reason the valves weren't opening properly was that they were that distorted that by the time they came out the motor would hardly run. Anyways its going pretty good. We need to change the airfilters for trumpets. Seems to have turbulance problems at the face of the carbies.(I'm told this is not uncommon) So we're down a little on power but compared to what we have had its awesome. Shit loads of torque. Over the next few months Craig will take it to Calder legal street drags and do a dyno run so we can get some real figures. The motor feels extremely strong so my plans to supercharge it and lower the dif ratio are still looking the way to go. Next years project! Edited May 28, 2006 by SLOTH Snr Quote Link to comment Share on other sites More sharing options...
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