Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,549 topics in this forum
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- 22 replies
- 2.5k views
Been checking out my sons car some. I looked at the plugs/ Autolite 63 and the two middle plugs are rich. Outside four are ok. I noticed that the intake has shared runners on 1-2 and 5-6 and that 3-4 have their own runner. A PO has changed to Webers and elec. ign. But it looks like a stock coil/ still has a condenser, didn't see a resistor. This car is really coldblooded and you can tell it is trying to drop a cylinder at low rpm when not warmed up. If I keep it at 2000 rpm or so it smoothes out but not too good. No. 3 is actually a little wet. I haven't checked compression or timing yet. Just wondering if this intake design may be contributing to this. Or if I can lean …
Last reply by torker, -
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- 2 replies
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Sorry for the dumb question, but.... I need to know which direction the brake booster check valve does. there's a litte arrow on the valve, but i still dont know for sure. if you blow into the valve...it obviously goes only one way. can't blow one direction and can easily blow/flow in the other. so which direction does the valve flow... air going "TO" engine or air going "AWAY" from the engine. Thanks a mil
Last reply by Zs-ondabrain, -
- 15 replies
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I purchased some engine block paint from classic datsun motorsports. I was wondering if anybody else has used the same stuff because the color i have is almost a teal blue, and it doesnt resemble the original datsun blue color.
Last reply by ChrisB77, -
- 5 replies
- 1.6k views
I have new Goodyear Upper and Lower Radiator hoses and a new Champion 3 core Alum Radiator to put into the 1972 Z. While I have the front apart I am wondering if it is worth putting in a new fan clutch. Autozone two blocks from the house can have a new Torqueflo in house in 2 days for $39.99. Has anyone used this brand? I know you get what you pay for, but this is reasonable and with a bit more than 170,000 on my original I know it could use replacing.
Last reply by stevef1972z, -
- 0 replies
- 1k views
Hey guys I was up in Phoenix this weekend at a swap meet. On the way there and back I noticed that my 5th gear is fairly loud. What I mean is there is a like a "roar" almost but only in 5th gear. If I down shift to 4th and hit the same speed it does not make same noise. It also has a very loud vibration in the stick that can be heard. Secondly on the way back while passing someone on the freeway I reached about 105MPH, when I released the throttle the car popped out of fifth. It went back in with no trouble but it freaked me out a bit. So I'm wondering has anyone ever had these issue or no anything about them. I'm going to check the fluid level tomorrow but I wouldn't se…
Last reply by Pomorza, -
- 14 replies
- 2.5k views
what do you guys think about this radiator?http://cgi.ebay.com/ebaymotors/ALUMINUM-3-ROW-RADIATOR-70-71-72-73-DATSUN-NISSAN-240z_W0QQitemZ200424566675QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item2eaa3c2f93 i just purchased the a/c system from courtesy nissan for my 73 240z with the 2.4 engine and need something to keep it all cool. has anyone used one like this?
Last reply by WingZr0, -
- 1 reply
- 969 views
I'm reassembling the exterior engine components on my 75 and trying to cosmetically restore everything thru painting, powdercoating, polishing, ceramic coating etc. I'm looking for opinions on cleaning up the throttle body and air flow meter considering the electricals and moving parts, not to mention the fairly complicated shapes. I'm not sure if they could be broken down enough to powdercoat or not. Any experiences/suggestions?
Last reply by fiveleaf, -
detonation?
by whamo- 4 replies
- 1.2k views
I have had an issue with my 240z for as long as I can remember. It sounds like it is experiencing detonation at part throttle under a load. The engine is stock with the exception of a 280zx EI distributor. The initial timing is set at 7 degrees at 750 rpm. The total mechanical advance is all in at 2700 rpm. The total timing (initial 7) plus (mechanical 18) totals 25 degrees. This seems pretty tame to me. A typical performance v8 usually produces best power at 30-35 degees of total timing. I'm not certain how much a datsun inline 6 needs. I have tried takeing the timing back and enriching the carbs but nothing seems to effect the sound/feel that I percieve as detonation. I…
Last reply by whamo, -
- 2 replies
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I am swapping out my flat tops for a fresh set of round tops from ztheapy. Which PCV tube will I need? The 70 or 71-72 or something different? What's the difference?
Last reply by 70 Cam Guy, -
- 6 replies
- 1.8k views
I'm looking for ideas for building a regrind cam that will work with the stock Z valve train (springs, seals etc.) I know I'm going to make it a .460 lift, but looking for suggestions for duration. I know that Scheinider builds a cam with 270 intake and 280 exhaust and .460 lift......anyone had experience with that cam? I do want a regrind for longevity however. Also, does anyone have experience with Cam Techniques in Florida? They supposedly built the cams for Bob Sharpe. Any ideas on what I should use on this custom cam would be appreciated. It should be nice to pick up some pop without the hassel of springs and seals for a street driven car.
Last reply by fiveleaf, -
- 8 replies
- 1.3k views
On a 280Z, there is a bracket bolted to the oil pan in front of the starter to support the transmission oil lines to the radiator. Mine has some kind of bodged bracket made up of several pieces of metal bolted together and I don't think it is supposed to be that way. Is there a photo, or a drawing in the microfiche I can refer to, to make or get he correct bracket? thxZ
Last reply by TomoHawk, -
- 11 replies
- 13k views
i need to replace the u joints on my half axles and the axles won't come out. 1976 280z, R200, 5speed (swap from a 77z) I have new bearings and seals, and have parts for a drum >disc conversion as well as new shocks and bushings i want to install, but the u joints are priority as they have alot of play. the seal on teh driver side of the diff also needs replacing soon. the 8 bolts holding the half axle on the diff end and wheel end come off fine, but then the axle won't budge. nothing shoudl be holding it in now what options do i have, and how much does the level of difficulty go up for each? also do i want to save the drum parts intact (since i dont have to cut the…
Last reply by Babalouie,
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