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Post by joeytalent on Jun 22, 2017 20:43:07 GMT
Excuse the prarrie canoety pictures. It's raining and I only have my phone. Now I see the full back end, it actually looks pretty subtle. It definitely doesn't sound it.   |
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Post by atlex on Jun 22, 2017 21:22:30 GMT
subtle. need video with sound. also needs a polish lol.  |
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Post by joeytalent on Jun 22, 2017 21:51:52 GMT
subtle. need video with sound. also needs a polish lol. LOOK AT THE WEATHER! I'm staying inside where it's dry (plus I'm still at work). Haha, I'll try and get a video this weekend. And polish it. |
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Post by joeytalent on Jun 27, 2017 15:11:53 GMT
The video is coming, I promise. I was at a friend's cabin this weekend, camping next weekend. The 280Z managed 250 trouble free miles (and actually hit 25mpg). Exhaust is bedding in nicely.
However... let me tell you about the BCDD valve. My new nemesis.
BCDD stands for Boost Control Deceleration Device. It sits under the throttle body, and allows a small amount of air into the engine controlled via a solenoid. The idea is that when you're above 10mph, when you take your foot off the accelerator, the BCDD slowly closes, to avoid backfiring.
Well, that's all great if it's working or adjusted correctly. Mine is questionable at best. Currently when I take my foot off the accelerator, the car idles at 2500rpm. With the new exhaust, I sound like I want to race every single car at the lights ALL THE TIME. So I have to make some adjustments to that little by little. Or just get rid of it. Hmmm. I suspect mine has got a lot worse due to having to adjust the idle screw now that I have a new exhaust that doesn't leak everywhere.
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Post by atlex on Jun 27, 2017 15:16:16 GMT
Sounds amazing |
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Post by joeytalent on Jun 30, 2017 16:58:44 GMT
BCDD saga continues. There is absolutely no adjustment in it, so I'm now just planning on blocking it off. I actually got a '78 throttle body from eBay for $15 that appears to have a BCDD on it, so I'm going to gut that to see how neat I can make the blanking plate.
On another note, it's used about 1L of oil in 500 miles. Not great! I'm preparing myself mentally to replace all the valve stem seals, as there doesn't appear to be anything leaking out of the engine.
Going camping in Wisconsin this weekend. After this I have at least two free weekends and work is settling down a bit, so I'm hoping to crack on with everything and get the car back to a driveable state. Thankfully the Jeep still works.
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Post by joeytalent on Jul 4, 2017 21:43:30 GMT
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Post by Bilbo on Jul 5, 2017 0:50:52 GMT
Yes! Sounds amazing mate!
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Post by Meerkat on Jul 5, 2017 11:40:55 GMT
Sounds excellent!
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Post by Meerkat on Jul 5, 2017 12:00:25 GMT
Also, I don't know if it's just condensation, but it looks like a little puff of smoke comes out just after you rev it the third time - that could be where your oil is going!
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Post by joeytalent on Jul 5, 2017 14:56:01 GMT
Also, I don't know if it's just condensation, but it looks like a little puff of smoke comes out just after you rev it the third time - that could be where your oil is going! Yup, I see it! The car was cold when I did this, but the tell tale sign of the valve stem seals failing is oil dripping through the valve stems and being burnt on deceleration. Looks like that's exactly what's happening with mine. Not a huge cause for concern right now, I can just keep topping up the oil until the end of the month - I'm hoping I get a valve spring compressor for my birthday  . New seals are ordered up - less than $20, and I've managed to find a very detailed write up on how to do it all. I'll be photographing the whole process, more for my own benefit than anyone else. On annoyingly high idle news - I managed to score an old throttle body from eBay for $15. Came with a BCDD valve that seems to work, swapped that out this weekend. I now seem to have a different problem, the throttle is sticking open around 2500rpm after a light touch on the accelerator - blipping the pedal closes the throttle to the correct point. I've removed the dashpot to eliminate that (and probably won't reinstall it), so I'm not sure if the throttle return spring is on it's way out, or if the throttle body is gunked up with crap. Replacement springs are impossible to find, so I've ordered up some random carburetor ones in the hope I can make something work. I'll get the throttle body off again one evening this week and give it a proper clean out. I took a load of pictures of the exhaust and stuff this weekend, I'll get a new post up tonight. |
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Post by joeytalent on Jul 8, 2017 22:02:17 GMT
Manifold and ExhaustI had the car booked in to have the new manifold fitted and exhaust fabricated. I didn't want anything too loud, so opted for a 2.5" stainless system with two mufflers. Unfortunately the exhaust shop didn't reconnect the coolant sensor, leading to a poor running, impossible to drive car. The exhaust shop couldn't work out what happened, so I ended up having to get it towed to another garage and fixed. Here's some shots of the finished product:      And what exhaust post would be complete without a video? The idle on the car has been sticking on deceleration, which a bit of research indicates the Boost Control Deceleration Device is a likely culprit. I scored a replacement throttle body from eBay for $15:  The BCDD is the valve on the bottom. Three screws later:  And fitted (it's in there, I promise):  That appears to have cured the deceleration issue. I removed the dashpot as well to avoid any interference that it might cause. Unfortunately now the throttle is sticking open a little bit, and I'm kicking myself for not cleaning the throttle body out whilst it was off the car.
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Post by howardb66 on Jul 9, 2017 9:36:51 GMT
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Post by joeytalent on Jul 9, 2017 12:19:59 GMT
Hah, I actually have a replacement throttle body on its way with no BCDD valve. I think the goal over winter is to fit ITBs, depending on my garage situation. |
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Post by Bilbo on Jul 10, 2017 11:40:45 GMT
Hah, I actually have a replacement throttle body on its way with no BCDD valve. I think the goal over winter is to fit ITBs, depending on my garage situation. I can't even imagine how amazing that is going to sound. |
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le sigh