Timing Chain Guide and Tensioner Arm Maintenance?
04-29-2014, 03:24 AM
#11
Banned
When I build motors they get new chains and tensoiners. Big cams, valve springs with more than double OEM seat pressure, boat loads of power and 10k rpms all day and never a tensioner failure.
The tensioner are not the best and do lead to the problem. Tensiiners do get old and wear the worm gear then can't hold tension.. Chain slaps. When the chain slaps it stretches. Once it starts to stretch it doesn't stop. Just like any mechanism that uses a worm gear, eventually the gear wears and develops some back lash. K series tensioners are really bad about this and it's a bigger problem due to the vtc. The ecu monitors can angle very closely and will throw a cel when the chain stretches.
A few weeks ago I had a car in that kept having tensioner issues. I pulled the chain. It was nearly 3/4 inch longer than a new chain. The stock tensioner just doesn't have the range to make up for that. Hell the power difference from the cams being properly timed was worth the money spent to replace the chain.
The tensioner are not the best and do lead to the problem. Tensiiners do get old and wear the worm gear then can't hold tension.. Chain slaps. When the chain slaps it stretches. Once it starts to stretch it doesn't stop. Just like any mechanism that uses a worm gear, eventually the gear wears and develops some back lash. K series tensioners are really bad about this and it's a bigger problem due to the vtc. The ecu monitors can angle very closely and will throw a cel when the chain stretches.
A few weeks ago I had a car in that kept having tensioner issues. I pulled the chain. It was nearly 3/4 inch longer than a new chain. The stock tensioner just doesn't have the range to make up for that. Hell the power difference from the cams being properly timed was worth the money spent to replace the chain.
04-29-2014, 07:29 AM
#12
At least I know its not timing chain stretch.
What about the chain guides, do they ever wear to the point that the tensioner can't compensate? Do they ever need to be replaced?
Sorry if I seem overly paranoid, I just don't ever want to add my name to the list of people with blown engines.
04-29-2014, 08:25 AM
#13
On these cars generally the plastic guides and the chain itself do not have issues. No need to replace unless you are digging into the motor for other reasons.
The TCT on the other hand, its known to have issues, and new ones from Honda aren't any better.
Billman has a fix. His 'improved' TCT is the Honda unit, rebuilt with a fix to the core design issue. So its got all the precision and durability of the otherwise well designed OEM Honda part, with the root problem addressed.
If this car was still in production, you can bet Honda would fix the design themselves. Probably very similarly to Billmans fix. But they aren't going to spend their resources on a car that hasn't been built for over 5 years.
Enter Billman. His part is backed by a lifetime warrenty and the reputation of the worlds foremost S2000 specialist.
The TCT on the other hand, its known to have issues, and new ones from Honda aren't any better.
Billman has a fix. His 'improved' TCT is the Honda unit, rebuilt with a fix to the core design issue. So its got all the precision and durability of the otherwise well designed OEM Honda part, with the root problem addressed.
If this car was still in production, you can bet Honda would fix the design themselves. Probably very similarly to Billmans fix. But they aren't going to spend their resources on a car that hasn't been built for over 5 years.
Enter Billman. His part is backed by a lifetime warrenty and the reputation of the worlds foremost S2000 specialist.
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