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| Let's get Technical! Discussion for hardcore in-depth motor heads! |
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#2
11-12-2004, 01:15 PM
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If their camshafts are anything like their headers, I wouldn't install them if I was paid to.
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BD (Before Deer): Clean... Very Clean. AD (After Deer): Nascar Ready.   Go Baby Go. 
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#4
11-12-2004, 02:12 PM
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you can be the guinea pig, somebody has to be the first one to be brave enough
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#5
11-12-2004, 03:52 PM
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Re: Obx Camshafts????
OBX is chaning alot now yes they used to SUCK taint.
Now i hear nothing but good things from them. These cams are contracted out by someone I think Crower so its just a non brand name part.
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#6
11-12-2004, 09:15 PM
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Re: Obx Camshafts????
OBX header I got for my car looked real good but fit like SH**
also look on ebay, their stage 3 cams have less lift/duration than an OEM CTR set would give you, maybe its a misprint though.
__________________
current -84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex history: -01 R1-04 daytona 600-94 teg RS-95 teg LS -91 teg RS-92 teg GSR-94 civic CX hatch (3 times) -94 civic DX-96 civic HX-97 Accord LX-72 superbeetle -74 beetle-84 silverado-66 c10-74 maverick-78 280z -84 200sx-86 tercel wagon-95 mustang V6
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#7
11-13-2004, 04:50 PM
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allrite finally did the install.... cam shaft and camg ear... we did everything perfect lubed up the cam before installing it lined up the crank with the cam gear... everything was timed good... car idles fine little sluggish... but my valves are CLICKING LOUD AS FUCK and i drove the car has no power througout the whole rpm band NO POWER AT ALL...
do u t hink its cause the valves are too loose and need adjustment? let me know guys.... \ alos the motor fucking screams loud sounds like when u bog out but the whole time im flooring it
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#8
11-13-2004, 06:15 PM
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Re: Obx Camshafts????
you HAVE TO adjust the valve lash when installing new cams, who knows if the base circel is exactly the same as the OEM cams you took out, so maybe they were smaller and you have way too much clearance, and the valves wouldnt open as much for as long so youd not have much power, or they are bigger and theres no clearance so the valves never close and you never build good compression. worst case would be that the valves hit the piston because of failure to adjust them, I dont think it would be that far off though to cause piston/valve contact but its possible.
Id say dont run the engine til you check the lash and adjust to it to spec.
__________________
current -84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex history: -01 R1-04 daytona 600-94 teg RS-95 teg LS -91 teg RS-92 teg GSR-94 civic CX hatch (3 times) -94 civic DX-96 civic HX-97 Accord LX-72 superbeetle -74 beetle-84 silverado-66 c10-74 maverick-78 280z -84 200sx-86 tercel wagon-95 mustang V6
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#9
11-14-2004, 01:15 AM
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i tried to figure out how to adjust the valves.. but i couldnt figure out where u slide the FEELER gauge in at..? i figured out how to loosing the lock nut and adjust it but i dont know where to slide in the feeler gauge at.. can somone help me out there thanks
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#10
11-14-2004, 01:24 AM
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Re: Obx Camshafts????
well, Im pretty sure on D series its between follower/valve and on B series its always between follower/cam lobe.
__________________
current -84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex history: -01 R1-04 daytona 600-94 teg RS-95 teg LS -91 teg RS-92 teg GSR-94 civic CX hatch (3 times) -94 civic DX-96 civic HX-97 Accord LX-72 superbeetle -74 beetle-84 silverado-66 c10-74 maverick-78 280z -84 200sx-86 tercel wagon-95 mustang V6
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#12
11-14-2004, 11:03 AM
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Re: Obx Camshafts????
why did you do a cam install not knowing what to do.
to check valve clearances: set cylinder #1 to TDC then loosen the rocker valve tip(the little screw on the rocker arm). insert the feeler gauge between the top of the valve and the bottom of that little screw. tighten/loosen so you pretty much have to yank the gauge out. repeat on the opposite side of the head (intake/exhaust wise). repeat steps for all other cylinders GOING IN ORDER ->1,3,4,2,<- exhaust clearance is .012(.3mm) intake valve clearance .010(.26mm) +/- .0008(.02mm) limit
__________________
D16Y7/D16Y8 mini-me swap turbo coming this summer
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#14
11-14-2004, 10:39 PM
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ok i did the valve job today.. intake set to .009 and exhaust was .011 and after i was done i started it up and the ticking is WAY LOUDER THEN BEFORE...
before i adjusted them they were all very very tight..... intakes were like .004 and exhuast like .006 but even after the adjustment... ITS EVEN WORSE NOW!!! any ideas?
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#15
11-14-2004, 10:54 PM
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Re: Obx Camshafts????
you POSITIVE the cam is timed correctly? AND cam isnt advanced/retarded by way of cam gear?
if the valve lash didnt do anything for you maybe the valves did hit the piston and they are all F'd. hope not but if you have a high lift cam, insufficient valve lash, and an incorrectly timed cam it can happen. run a compression test and see what the results are? cuz bent valve->no compression->not much power which you stated earlier.
__________________
current -84 datsun 720 4x4(2nd time)-93 accord-90 camry V6-90 warrior-94 300ex history: -01 R1-04 daytona 600-94 teg RS-95 teg LS -91 teg RS-92 teg GSR-94 civic CX hatch (3 times) -94 civic DX-96 civic HX-97 Accord LX-72 superbeetle -74 beetle-84 silverado-66 c10-74 maverick-78 280z -84 200sx-86 tercel wagon-95 mustang V6
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