bgd73 Posted June 27, 2006 Share Posted June 27, 2006 "Above 60 mph that plywood on your roof is going to make your little subaru take off" I said "that is ok it has got an airplane engine" and a big fake:lol: After this comment at home depot by the hillbilly standing next to his 4 door eight foot bed pickup truck with a handful of 2x4's (as if god blessed him and his pride of fuel consumption).I slammed my piece of 5/8th plywood on my roof rack today and my 2wd loyale got very powerful. Engine thumped harder than I have ever heard and it took off like a bat out of h*ell. I encountered this last on a 196* hay truck with a gas engine, intentionally low compressioned due to the 10000 lb (5 ton) weight limit. It gained engine strength the more it was weighted-- high compression would have broken internal parts like a turbo with too much pressure.I am guessing my car should be more responsive than this when it is lighter than a 4wd.Am I wrong? Or is it like the engine is for 4wd only? Do I need rings? or 4wd? I have found several places throughout the car that Subaru did to limit my sedan to the 84 hp that the manual states it as being , and changed them.I am sure as heck beating the power of the 4wd n/a, not nearly the torque. Has anyone put a turbo on 9.5:1 2wd? or could tell me a trick to torque this a little more without adding weight? this is summary of what I have done to change oem restrictions (all custom): drilled 2 inch hole in airbox changed droopy rubber intake to harder plastic with a slight venturi still larger than the original boots diameter (got a bellow with action) aluminum piping on several hoses to keep top end cooler fuel damper removed by fuel pump as the fuel pump has one already--(as stated in the 1990 spfi schematic) bosch plugs (no difference really) removed sound resonator, replaced intentionally crushed pipe- added glasspack. more details here: http://93loyale.50megs.com Next step i can think of is even taller tires with a high rating for weight and speed at 185/80/13 (it is a difficult find, but did find at this size "kumho" brand name) it is about all I can think of.. any simply ingenious ideas would be great. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted June 27, 2006 Share Posted June 27, 2006 There is no difference in engines - other than emmissions related chages required for 2WD vs. 4WD, or CA. Subaru was very much into interchangable parts - the core engines have always been the same regardless of drivetrain. I have driven both, and they act differently due to the gear ratio's, final drive ratio, and tire sizes. The 2WD came with 175/70R13's, and the 4WD was 185/70R13. GD Link to comment Share on other sites More sharing options...
bgd73 Posted June 27, 2006 Author Share Posted June 27, 2006 Thanks. That is what I figured. I can assume it is just getting old at 150k+ miles. This boxer designed for the 4wd could be different in 2wd. such as 11:1 compression on regular gas in this lightweight and a bigger intake and cams (duration/lift) would make it an immortal classic. Mercedes has 11:1 on an aluminum v8,running regular gas, proving the cast iron sponge is the high compression heat keeper and flow killer. An aluminum boxer would still have longevity due to the airflow for the cylinders. Frustrating. The top end ratio is very tall. I don't even want to change the tranny. 7000 would be well beyond 115mph and easy to get there.... Not like an old chevy and its options, nothing else I can do.:-\ Maybe fill in the heads combustion chamber with some weld and .... This car is so light the engine doesn't even want to torque with bad fuel . Somethin has got to make up for it somehow, besides weight added Link to comment Share on other sites More sharing options...
testy Posted July 14, 2006 Share Posted July 14, 2006 you said you drilled a two inch hole in your airbox. And replaced droopy hose after the airbox with solid pipe. can u please take pics so I can copy? Does it make a difference? Also, with spfi, theres hoses going into the droopy pipe, where did you accomidate for those. Im not sure what they do... thanks alot. Link to comment Share on other sites More sharing options...
bgd73 Posted July 14, 2006 Author Share Posted July 14, 2006 testy said: you said you drilled a two inch hole in your airbox. And replaced droopy hose after the airbox with solid pipe. can u please take pics so I can copy? Does it make a difference? Also, with spfi, theres hoses going into the droopy pipe, where did you accomidate for those. Im not sure what they do... thanks alot. pics are here: http://93loyale.50megs.com/ntakt.html as for the piping, find anything heat conductively sensitive, aluminum, copper, etc.. It really made a difference. If your rubber intake has a droopy problem, really go over my site and see what I did. Bad air flow is most of the cause, making too much heat, as well as my 2wd being lighter than subaru's mainstream 4wd, and it likes to take off quicker, causing a strain on everything, including cooling.The 2wd Loyale, running good, is comparable to a turbo with engine flow probs.It is well worth the cheap hacks Link to comment Share on other sites More sharing options...
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