Problems at high milage?

[finch1750]

Originally Posted by Adam_L

Are these instances of faulty TOB , or is there something that can be done (maintenance …. lube) that can help prolong the life of the TOB ?

The clutch fork is a weak point that puts extra stress on the TOB. The Velxo/Versus clutch fork seems to be the answer. Just have it replaced if/when the TOB goes since you are already in there. Not sure about the updated one for 2017, haven't seen or heard anything on it yet. But many people around here who had one or more TOB failures have been fine since adding the upgraded clutch fork under DD and track use conditions.

[humfrz]

Originally Posted by finch1750

The clutch fork is a weak point that puts extra stress on the TOB. The Velxo/Versus clutch fork seems to be the answer. Just have it replaced if/when the TOB goes since you are already in there. Not sure about the updated one for 2017, haven't seen or heard anything on it yet. But many people around here who had one or more TOB failures have been fine since adding the upgraded clutch fork under DD and track use conditions.

How can that be ......??




humfrz

[finch1750]

Originally Posted by humfrz

How can that be ......??




humfrz

Something about the stock clutch fork flexing causing premature wear on the TOB

Im AT so dont have first hand experiance. Just know the the local FT86 specialist shops have found that to be the cause and the replacement clutch fork has helped. Maybe Im wording it wrong lol

Maybe @The Racers Line might be kind enough to straigten me out

[humfrz]

Originally Posted by finch1750

Something about the stock clutch fork flexing causing premature wear on the TOB

Im AT so dont have first hand experiance. Just know the the local FT86 specialist shops have found that to be the cause and the replacement clutch fork has helped. Maybe Im wording it wrong lol

Maybe @The Racers Line might be kind enough to straigten me out

Well, I can understand that if the clutch fork cracks or breaks, how it could stress out the TOB by pushing on it catawampus like.

However, by the way it is made, I don't see how it could flex, at least to any significant degree. Also, the arms of the fork are not "fixed" to the TOB, so there is some leeway there.

Maybe it's a chicken and egg thing ........ is the clutch fork wearing out the TOB or is the TOB wearing out the clutch fork .......

Chew on that cud fer ah spell.

Chicken/eggs/farm tractor/clutch ......... brings to mind a story.

It was a warm spring day, back on the farm, I was about 10 years old and was backing up an Oliver tractor to a disk and my grandfather was between the tractor and the tongue of the disk holding it up to make the connection.

I was leaning back on the seat and slowly letting out the clutch and backing up, when the tractor lunged backwards, pinning my grandfathers leg between the drawbar of the tractor and the disk. He let out a yell and I hit the kill switch on the tractor.

I ran to the house and got my mother and she rushed him to the doctors office (no emergency facilities within 40 miles).

I was all guilt ridden until my father got home and showed me where the clutch lever had broken off. He welded it back together, but I never did trust it again.

Lesson learned ...... NEVER stand in back of a machine when someone is backing it up.


THE END


humfrz

[Ultramaroon]

The clutch fork has nothing to do with causing premature wear of the TOB. The shitty design of the TOB sliding on and galling the aluminum quill is what causes premature wear.

The fork gives out after the TOB starts binding. That is the sequence of events.

[TLD]

Originally Posted by finch1750

^that's what I meant. I do not have rod knock but do have detonation at times but only under hard conditions. I monitor it and usually mixing in some 100 Oct fixes the problem (I'm in CA so this gets me to 93 Oct vs. the crappy 91 I got)





I don't know about the coil packs. I haven't loss one yet but now that I am tracking I am tossing it in with the wear items. Heat kills them from what I have seen.


I don't really have a ton of oil issues. My timing cover has been leaking for a while, but not bad enough to get it fixed. And the blowby is enough to measure in the catch can but not enough to see a loss between changes (I usually change my oil between 5k and 10k depending on what kind of driving I've been doing)


I do know a few other local owners who experience faint rod knock on cold start and they are around 60-70k miles on the car. Not sure how fast it is progressing for them though. Both of them track occasionally as well, like 3-4 times a year.

Can you tell me more about the knock tune? I have a 2012 manual gt86 at 37k miles (I live in Hong Kong so it's considered "high milage" here). Never experienced a knock (or maybe I don't know).

[finch1750]

Originally Posted by TLD

Can you tell me more about the knock tune? I have a 2012 manual gt86 at 37k miles (I live in Hong Kong so it's considered "high milage" here). Never experienced a knock (or maybe I don't know).

It only occures under conditions pushing the car hard like on the track. Otherwise it isnt too bad, just dont try to accelerate quickly in a at low RPM which puts too much load on the drivetrain (ie dont try to pass somebody on the highway at 2k rpm, just downshift into the 3-4k range first). It isn't something you can notice unless data logging/monitoring. I have an OFT which has a warning trigger for me to notice when knock could be present.

[Decep]

I think there will be a ton of leaky FT86s on the used car market in the next few years judging by threads on here.

Already get a whiff of burning smell at idle and im barely over 20K miles. Doesn't show up on the dipstick really and the dealer keeps saying there's no leak. I DID have a leak at the cam plate and replaced it with Raceseng plate and it fixed that particular leak though

[finch1750]

Originally Posted by Decep

I think there will be a ton of leaky FT86s on the used car market in the next few years judging by threads on here.

Already get a whiff of burning smell at idle and im barely over 20K miles. Doesn't show up on the dipstick really and the dealer keeps saying there's no leak. I DID have a leak at the cam plate and replaced it with Raceseng plate and it fixed that particular leak though

Timing cover? Forgot mine has been leaking a while and is fairly common. Doesnt lose enough to measure so doesnt bother me too much, yet

[ToySub1946]

Relating to what Ultramaroon stated. Terms: snout or quill.

Not our car, yet similar problem:

[ame="https://www.youtube.com/watch?v=frcvMyAyOco"]Subaru Transmission Snout Repair Tip - YouTube[/ame]

[PetrolioBenzina]

OP, I'll take your next car as a gift when you decide on something else, please!

[TLD]

Originally Posted by finch1750

It only occures under conditions pushing the car hard like on the track. Otherwise it isnt too bad, just dont try to accelerate quickly in a at low RPM which puts too much load on the drivetrain (ie dont try to pass somebody on the highway at 2k rpm, just downshift into the 3-4k range first). It isn't something you can notice unless data logging/monitoring. I have an OFT which has a warning trigger for me to notice when knock could be present.

Acceleration at low RPM the car bogs like it's falling apart so I try my best not to do that. And it's a shame we don't have a track where I live. So I reckon I wouldn't need a tune to fix that? Thanks!

[Chaetagnath]

I'm at 93,000 miles. I've replaced the clutch and just had to replace the rear wheel bearings. That's about it.

[itsAlex]

I put almost 50,000km on my fr-s within the first year of owning it. The car is more than reliable, just know that the Michelin Primacy's wear fast. Like, really fast. My car isn't even two years old yet and I'm close to needing to replace the Primacy HPs. And, no, I haven't excessively spun my tires. Maybe twice a month or so for short bursts but that's about it.

One other thing that might have to do with the amount of driving I did in the past year, my front bumper has almost completely lost its glossy look due to road debris. It kinda looks and feels like someone lightly sand blasted my front bumper to be honest.