Is it true the new M8's have plastic throttle bodies?
I seen someone advertising a billet throttle body to replace the plastic ones.
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Plastic Throttle Body
Is it true the new M8's have plastic throttle bodies?
I seen someone advertising a billet throttle body to replace the plastic ones.
Yup, the housing is plastic
lighter and cheaper to make
less problems with inner casting flaws = smoother air flow
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
Can we change Jack's handle to Obi-Wan Kenobi? He's got the answers! Glad you are on the site Jack...jcOriginally Posted by Jack Klarich
Yes, the TB is plastic. When we discovered that we thought it may even be beneficial.Is it true the new M8's have plastic throttle bodies?
I seen someone advertising a billet throttle body to replace the plastic ones.
Since the cooler the air is when going into the combustion chambers, the more efficient the engine will perform. We were thinking that the plastic would retain less heat than the metal TB's.
But all the testing we did, we did not see more than a 5* difference between the metal and the plastic.
So, like Jack said, it is probably just done to save costs.
As of now we have not heard of any failures...but it has only been a bit over a year.
Kevin
I guess time will tell
Hate like hell to find out over time a piece breaks off and into the combustion areas.
The article/ad was saying with higher temperatures it could cause the plastic to deform etc. Not sure how true any of that was
I wouldn't think it would get hot, What would, the air velocity cooling it down. I know with some carb's the throttle plate will ice up at times even in the summer...My Rhino has a heater in the throttle plate and its on all the time as far as i know.. Its all automatic, Turn the ignition on and it goes on...I guess time will tell
Hate like hell to find out over time a piece breaks off and into the combustion areas.
The article/ad was saying with higher temperatures it could cause the plastic to deform etc. Not sure how true any of that was
Sometimes a Cigar is Just a Cigar.....
2019 Tri-Glide.......
Not too surprised at this obvious cost saving measure by HD. It sux that they've stooped to using plastic on their engine components, but they've got to stay competitive in today's marketplace.
Time will tell on it's long term durability in the real world....
In between two cylinders I bet its well over 250 deg or higher.I wouldn't think it would get hot, What would, the air velocity cooling it down. I know with some carb's the throttle plate will ice up at times even in the summer...My Rhino has a heater in the throttle plate and its on all the time as far as i know.. Its all automatic, Turn the ignition on and it goes on...
A heater in the throttle plate never heard of that? Please explain
I would be more concerned about cracks, and subsequent leaking. Time will tell.I guess time will tell
Hate like hell to find out over time a piece breaks off and into the combustion areas.
The article/ad was saying with higher temperatures it could cause the plastic to deform etc. Not sure how true any of that was
There are some crazy durable plastic nowadays.
We use some plastic sleeves when powdercoating. They are subjected to 600* over and over again and are just as good after hundreds of cycles as they were when they were new.
Kevin
Can't explain it, Its factory and in-line fused also labeled right on the wire ''heater.''...In between two cylinders I bet its well over 250 deg or higher.
A heater in the throttle plate never heard of that? Please explain
I first noticed it when i had the engine cover off a few years ago to check /adjust the gear indicator lights.
I assume the wire is hot when the ignition turned on,Other than that I haven't any other info on it..
Sometimes a Cigar is Just a Cigar.....
2019 Tri-Glide.......
Surpising, The plastic throttle bodies do hold up to heat fairly well
We have seen this in the automotive end for some years now The only down turn is the throtle plate bushing bosses are not stout enough
Over time they will crack and cause eratic throttle response
They are here to stay so we best get up on them, and try to figure what makes them tik
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
Thanks, just here to help when I can
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
I own an 80+ year old Bakelite, Tube powered radio. It gets HOT! The plastic still looks incredibly good!
stuff made 80 years ago was normally made to last for many years compared to the junk they sell now.
Truestuff made 80 years ago was normally made to last for many years compared to the junk they sell now.
Bakelite material was more on the ceramic end if I remember right
It handled heat pretty good in the day
Over time it did show signs of cracking
Hence modern day ABS plastics and more JMO
Nuff Said," Were Burnin Daylight, Lets Ride"(Sober 37 years)
Current ride : 2021 FREEWHEELER M8, oldest ride 1960 FL
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