Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,574 topics in this forum
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Looking to buy a new set of six (6) NPR Pistons and Rings +0.020 for a 240Z or L24 engine. Thanks!
Last reply by Love my 72 240Z, -
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Howdy folks, I was able to finally track down a BCDD (Boost Controlled Deceleration Device) for my early (9/75) 1976 280Z and wanted to share with the community as well as ask some questions. Here is a picture of the device for an early 76: Note that the altitude corrector is flush to the bottom of the outer housing and is similar in appearance to a set screw. On the side you can see the screw which locks it in place. Note the orientation of the screws, 3 are used to attach the BCDD to the Throttle Body, 3 are used to keep the sections of the BCDD where the diaphragms are together and the last one is just to keep everything aligned. I accidentally t…
Last reply by siteunseen, -
- 2 followers
- 3 replies
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Does anybody know what years and models of Toyota 4 x 4 trucks used in r180 front differential with 3.90 gears? Sent from my SM-T710 using Classic Zcar Club mobile
Last reply by Pop's Z, -
- 3 followers
- 15 replies
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I hear lots of contradicting info about this, but my stock 76 has a stock 3 spd automatic transmission. The odometer shows 85,000 and is likely accurate, judging by the rest of the car, but it could theoretically be 185,000. The car is 40 some years old. The service records never indicated a transmission fluid change. I know I would NOT want to flush it, but would dropping the pan and changing the filter/refilling be a good idea? (I've done this job on other vehicles, got the transmission oil bath...) I'm not having any problems, it is shifting great. Also, what would be a good fluid to use to refill? I assume it hasn't been using synthetic. Th…
Last reply by Chickenman, -
- 2 followers
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My 1972 240z has a 280z 5 speed transmission. I am having issues with the bouncing needle on the speedometer and while at that i would like to know if i have the correct pinion gear. I have the black one installed and a used yellow one. WHich is the correct one??
Last reply by 7tooZ, -
- 2 followers
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After installing my engine and trans as a single unit I cannot compress the slave cylinder enough to bolt it back up. The clutch fork won't move worth a ****, even if I put leverage on it with a wrench. I'd rather pull the motor than the transmission at this point. I hate this car.
Last reply by Arc2Arc, -
L24 Seized
by Rio24- 1 follower
- 4 replies
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Hello again gentleman, so I bought a 72 with a seized engine. I've read it's fairly common from car siting for 10+ years. I've read about the mystery oil and ATF, coke and even read about towing the car and popping the clutch to free up engine. I just received the car last Friday and What I'm trying first is mystery oil soak. It's been 4 days and nothing. I'm thinking about pouring some HOT ATF and trying that. Has anyone had success on freeing up a seized engine? Also, I need ideas for trying to turn the crank pulley instead of just the bolt, I'm worried it will break. Maybe even taking starter out and try turning the flywheel with a pry bar. What do yo…
Last reply by Rio24, -
- 3 followers
- 23 replies
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Checked my plugs and they are all wet fouled. Sent from my iPhone using Tapatalk
Last reply by Travel'n Man, -
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So today I'm tearing down a very worn high mileage F54/P79 ZX motor. It had low compression, and each cylinder was all over the place. 10 lbs, 50 lbs, 80lbs. Runs like crap. Anyway.. I take off the front cover and "clink" on the floor goes the chain tensioner piston. Pick it up and find about 1/2 the spring inside it. This is not good.... The tensioner body is still nicely attached to the block. There is no way the piston can get back in the body, I tried. How did that get out? Well it did. I wonder how much oil comes out of the tensioner, and simultaneously NOT get where its supposed to go. I decided to do a leak down test before I rip the head off ju…
Last reply by siteunseen, -
- 3 followers
- 3 replies
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So I noticed great responses from this forum and so I decided to introduce my self. My apologies for posting away before this introduction. So I'm back in a Z after over 20 years. She's built 12/71, resprayed, triple Webers, 3/2 headers, Abarth exhaust, Tokico adjustables. She will be driven any chance possible. I might autocross her occassionally. I'm coming from 9 years playing with Porsches. Job loss forced me to rid of my 84 Carrera which I loved then tried a Cayman (now for sale) which was great but lacked the old car feel. I love driving these cars and really not one that keeps them in the garage for months. I'm looking forward to having fun making th…
Last reply by KSRosser, -
- 3 followers
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Hello everyone. I'm curious what everyone is able to get for idle vacuum with their aftermarket cam. I have a Colt Cams C542.s with the following specifications. Duration @ .50" 224 I/E or 280 degrees valve lift .510 Lobe Seperation 108" Engine is a L28 w/ about 8.7:1 compression. The best I can get using Megasquirt fuel injection is around 10"s. Sometimes jumps into 11" for short periods. Chickenman and I have been playing with the FI for a while now working out bugs, but my vacuum has always seemed a little suspicious to me. Either way, I just ordered a fancy schmancy adjustable cam gear to play around a little bit. What are you guys se…
Last reply by siteunseen, -
- 2 followers
- 7 replies
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does this look like a side seal leak (I replaced the main seal after this, but looks like leak from side as well)
Last reply by siteunseen,
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