July 10, 200718 yr The car now lacks power :-( Idles fine, seems to go good off idle, but the seat-of-the-pants dyno says that the on-boost power is NOT what it should be. It's not anywhere close to what it was BEFORE I put the cams in... Ignition timing is correct, and it idles awful well for the valve timing to be off... Turbo spools just fine (In fact it spools way sooner than it used to, especially revving it in neutral...) Any suggestions? It's drivable but not as fast as it should be :-P Oh, I guess I should probably mention... 87 GL turbowagon with 88 XT turbo motor, Delta 260 street cams (The "original" set...)
July 10, 200718 yr The car now lacks power :-( Idles fine, seems to go good off idle, but the seat-of-the-pants dyno says that the on-boost power is NOT what it should be. It's not anywhere close to what it was BEFORE I put the cams in... Ignition timing is correct, and it idles awful well for the valve timing to be off... Turbo spools just fine (In fact it spools way sooner than it used to, especially revving it in neutral...) Any suggestions? It's drivable but not as fast as it should be :-P Oh, I guess I should probably mention... 87 GL turbowagon with 88 XT turbo motor, Delta 260 street cams (The "original" set...) Are they "turbo" cams or cams for an NA motor? Most NA cams will simply not work well for a turbo motor; a turbo camshaft needs to have very little valve overlap or you wont spool your turbo very quickly; you lose exhaust pressure to the valve overlap. If the cams you put in were for an NA motor, I would suspect that the problem lies right there. However, if they ARE turbo cams, then its possible you arent feeding your motor enough fuel now. stock injectors? you might want to upgrade to the 280ZX ones.
July 10, 200718 yr Are they "turbo" cams or cams for an NA motor? Most NA cams will simply not work well for a turbo motor; a turbo camshaft needs to have very little valve overlap or you wont spool your turbo very quickly; you lose exhaust pressure to the valve overlap. If the cams you put in were for an NA motor, I would suspect that the problem lies right there. However, if they ARE turbo cams, then its possible you arent feeding your motor enough fuel now. stock injectors? you might want to upgrade to the 280ZX ones. These are the original set of Delta 260 street cams for a turbo EA82. They worked awesome in my RX until I blew it up (twice). Something seems to be off somewhere Andrew...
July 11, 200718 yr Author lol I found it... One of the PCV lines had popped off, it was the little horseshoe shaped one.. Must have vented somewhere that it didnt' affect anything until the boost kicked in but it seems to work great now Now I just need to fix the stupid transmission mount so that it quits popping it into 4WD when I hammer on it... :-P
July 12, 200718 yr Author At least mine runs but it'll be getting an EJ as soon as I can afford it :-P
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