more power for 85 nissan z24

[babyethan1]

Hey guys .. just wonderin if there is anyone having the same probs as me?? I can get the truck up to about 65 mph TOPS!! and it slows way down goin up incline have to downshift to atleast third gear. Does this engine not have the power orriginally or is there something I can do to gain power? The engine is stock new exhaust, head gasket kit, high flow air filter, new plugs, cap & rotor, both coils are OK! maybe some tricks or something THANKS!!!

[seang]

You should check the compression.

[PEZi]

^ that

they are indeed low HP... but even before modding mine, it would climb hills on the highway at the posted speeds even at 7,500 ft above sea level

[babyethan1]

Ok sounds good I will do that... Thanks!! I just replaced the head gasket so if compression isnt up to par then what would more then likely be the prob??

[PEZi]

the rings around the pistons may be shot

[longtooth]

If your compression is low I would recoment doing a leak down test. That will tell you were its leaking. If your compression is fine I would check your ignition timming and see what your engine vaccume is at.

[babyethan1]

hey guys whats up again.... I did a compression check today all four cylinders>>> 1 124 psi / 2 125psi / 3 125 psi / 4 125 psi... is this a good psi or is the engine too tired to come back??? another Q? I live about 7000 ft any suggestions on timing for the elevation?? thanks again guys

[PEZi]

well.... it is a tad low but not bad per se

at 7000ft. you need high altitude tuning.... for the most part the '85 does this for you carb-wise via the mess of wires going to the carb.... other than that you can advance the hell out of the timing.... just make sure it doesn't start pinging and you're good

[babyethan1]

ok cool i did advance the tim ing to about 12 deg. not pinging maybe a lil more wouldnt hurt ?? what do u think... another thing kinda funny! i disconnected the coils while doin the comp test and one coil had arc shotting out and down the sides of the plug neck is that normal or a bad coil ??

[PEZi]

yeah... crank it up till it pings then back it off

no idea on the coil lol

[babyethan1]

ok ill do that thanks lots man !! ill post in am after i advance the hell outa it lol ok thanks AGAIN!!!

[babyethan1]

Hey PEZI.. cranked the timing up to about 16 still aint pingin runnin good lol..... sorry million Q?? what coil is the intake side? thanks

[PEZi]

you'll have to look at the cap... the intake side stuff is labeled I and exhaust side stuff labeled E

[babyethan1]

ok I noticed that on the cap but what coil does the intake side plug to or it doesnt matter what coil ??