Damn, Tom, them thar four shiny new chrome Trumpets are Pure, Z900 Exhaust-PORN, right there, and their sound, sure does bring back a whole lot of really nice memories for me from my own young, and silly, 1973 Z900 owning days. Great job..! 😉👍
Thanks for referring to our chat the other day about hanging the carbtune upside down. I recently found out that the upside-down story is explicitly described in later revisions of the carbtune manual. I'll quote it here so you can read it: "Most bikes have readings higher than 8cmHg and going to 42cmHg, but some bikes such as R-series BMW's and two strokes can have readings lower than this. To get a reading below 8cmHg remove the plastic cable clip from the slot at the top of gauge and insert it into the slot at the bottom. Push cable clip into slot from front of gauge. Hang the Carbtune Pro upside-down. Ignore the scale figures. Zero will now be around 16cmHg on the scale but the full width scale graduations will still be 2cmHg. Absolute values are not important. Comparisons are important." Nice videos by the way. I enjoy watching them. They are very educational.
That filter is what Z1 Enterprises says it takes. I cross checked other aftermarket suppliers and they show the same one. I’m not sure what the deal is with that. It doesn’t fit that air box period.
Great vid as always, thanks for the hard work in producing this content. As soon as you had the cover off and rotated the cams I could see there was a problem straight away, the bolt patterns on the cam sprockets should also match each other! Remember to count pins not links!
That’s a cleanable aftermarket air cleaner element that if I’m not mistaken is an early mfg metal k& m air filter.I also ran into a problem with Emgo air filter not fitting either of the stock air boxes in either my 1978 kz1000 LTD’s.
Those long rubber tubes to the vacuum readout might damp the intake pulse. The intake pulse would travel about the speed of sound, which is low at reduced pressure. The pulse might never reach the manometer before the next engine cycle is under way. This would be back of envelope calculable.
It doesn't get any better than when the bike has pipes on both sides! Much better design! LOL - rookie mistake on the plugs! There are some signs to watch out for, to spot the fake plugs, but I can't find back to the list and pictures now.. :( I'll let You know when I find the list!
They're not mercury actually, they're precision ground and weighed slugs of steel I guess stainless maybe. Each one is calibrated for that particular spot in the tool. If they come out for cleaning they have to go back in the same place. The vacuum pulls up on each of those slugs. I've used the dial gauge type as well, they work, but being they're all cheap Chinese junk, they constantly require calibration. Cheers.
They used to be mercury filled years ago, now stainless slugs. I honestly don't know why people bother with any other type of gauge, with all the mechanical gubbins between the actual vacuum and the readout, this manometer type directly links to the vacuum being pulled, so simple and spot on accurate.
Damn, Tom, them thar four shiny new chrome Trumpets are Pure, Z900 Exhaust-PORN, right there, and their sound, sure does bring back a whole lot of really nice memories for me from my own young, and silly, 1973 Z900 owning days. Great job..! 😉👍
Thanks for referring to our chat the other day about hanging the carbtune upside down. I recently found out that the upside-down story is explicitly described in later revisions of the carbtune manual. I'll quote it here so you can read it: "Most bikes have readings higher than 8cmHg and going to 42cmHg, but some bikes such as R-series BMW's and two strokes can have readings lower than this. To get a reading below 8cmHg remove the plastic cable clip from the slot at the top of gauge and insert it into the slot at the bottom. Push cable clip into slot from front of gauge. Hang the Carbtune Pro upside-down. Ignore the scale figures. Zero will now be around 16cmHg on the scale but the full width scale graduations will still be 2cmHg. Absolute values are not important. Comparisons are important."
Nice videos by the way. I enjoy watching them. They are very educational.
Yea thanks again for mentioning that. Interesting revision info. Appreciate it.
Good catch on the cam timing. It looks good with those 4 into 4's
Definitely the right air filter in the bike, I don't know what that new one would be for lol👍🙂🍻 love your old bike videos mate👍🙂🍻
That filter is what Z1 Enterprises says it takes. I cross checked other aftermarket suppliers and they show the same one. I’m not sure what the deal is with that. It doesn’t fit that air box period.
Nice work, and a beautiful bike. I love those 4 into 4 pipes!
Great vid as always, thanks for the hard work in producing this content. As soon as you had the cover off and rotated the cams I could see there was a problem straight away, the bolt patterns on the cam sprockets should also match each other! Remember to count pins not links!
I should have seen it.
that would look good in my garage very smart you do a good job ,david
Lot going on there. But solved. Enjoyed the video and RIDE SAFE OUT THERE!
To verify the correct cam timing, the square cutouts on the right IN/EX camshaft ends should be paralell to the gasket surface.
Yes, you are correct. I failed to mention that.
That’s a cleanable aftermarket air cleaner element that if I’m not mistaken is an early mfg metal k& m air filter.I also ran into a problem with Emgo air filter not fitting either of the stock air boxes in either my 1978 kz1000 LTD’s.
Those long rubber tubes to the vacuum readout might damp the intake pulse. The intake pulse would travel about the speed of sound, which is low at reduced pressure. The pulse might never reach the manometer before the next engine cycle is under way. This would be back of envelope calculable.
Good Job! sounds Good.
Great video.
Fabulous ❤
It doesn't get any better than when the bike has pipes on both sides! Much better design!
LOL - rookie mistake on the plugs! There are some signs to watch out for, to spot the fake plugs, but I can't find back to the list and pictures now.. :(
I'll let You know when I find the list!
If you can find the material and it's something I can dig into at my end, I may do a video on the topic.
hi sound good👍👍👍
It may be z1000 a1 air filter as they are the same shape and roughly same size
Not sure. Still haven’t figured it out.
nice pipes,i am not a fan of mercury gauges
They're not mercury actually, they're precision ground and weighed slugs of steel I guess stainless maybe. Each one is calibrated for that particular spot in the tool. If they come out for cleaning they have to go back in the same place. The vacuum pulls up on each of those slugs. I've used the dial gauge type as well, they work, but being they're all cheap Chinese junk, they constantly require calibration. Cheers.
They used to be mercury filled years ago, now stainless slugs. I honestly don't know why people bother with any other type of gauge, with all the mechanical gubbins between the actual vacuum and the readout, this manometer type directly links to the vacuum being pulled, so simple and spot on accurate.
The old school Mercury gauges always work perfect for me and I've tuned many bikes back in the day.