Effects on longevity/engine

[flavor]

I'm wondering what effect doing the TFI, intake mod and Vance & Hines exhaust has on engine life of the Nomad.

Does the stock set up, providing no pinging in the engine, have a longer life.

[coldfingers]

I would guess the stock set up without pinging would last longer as I think they have done their homework but who knows?

[bobzinger]

I think pinging (lean running) is destructive to your engine. TFI and pipes should have no effect on your engine, except that you might run it harder for the sheer joy of increased performance.

[dogdoc]

+1 BOB

[macmac]

Ping is directly related to an overly lean fuel mix. The mix explodes, and when ping occurs enough, it eats piston tops at the hard square edge, and errodes metal like a hard water wash off a creek banking.

It can cut both valves, since ping can occur when the intake is still open, but mostly it cuts the exhaust valve in general. This cuttong is from the edge of the valve face where it needs to fit the valve seat. A burned valve means a 0 psi compression stroke. And than means you are down to 1 clyinder.

I have never simply added a TFI from teclusion on a other wise all stock bike, but it would still serve to cut down ping if not eliminate ping completely.

Both my 01 1500 and 06 1600 pinged all stock. Once the TFI was added there was never again any ping. There was never any start up issues either.

I commonly run 87 and 98 octane, and never run anything in the 90 octane range ever..

In general the cooler the engine runs the less wear there is. There is less varnish build, as well. The varnish is a carbon based compound from burning oiuls and fuels onto metal where there should be none. It is a brown color when it happens, and it happens to cams, cranks, rods, valve stems and other parts, that can suffer for any added materials. Varnish is a build on item, and can easily become a gummy goo mess.

When all 3 items, Intake, Exhaust and fuel are considered one thing, you add fuel to a engine that can fully breath it's maximum. Whether or not you use that mx is up to the rider.

The TFI is adjustable to riding type to a limited degree, so it is possible to have more than one set of settings.. I tend to run my bike in economy mode and don't ride all that hard, I almost never bounce off the rev limiter.

On a day i plan to horse around and tempt a speeding ticket I change the settings.. I am not usually into that because I am not sure it's legal at my age. About 25 mph over the limit is about my speed, just under radar I think...

What mostly limits a Nomad in breathing is the exhaust, and the 2nd most limiting item is that dammned cross over tube feeding air in.

The caddman Q set up only has the left side (seated) for show, and while it may breath a little bit, it isn't what the engine wants to do at all, and the right side does 99.999 % of the breathing.

If you can't breath in you can't breath any more out.. If you can breath out more by mechanical means than you can breath in then there isn't much point.

Matching what you can breath in with wha can be breathed out is the win win situation, and there is just that in the 3 items as one.

IF we could get a bigger intake yet and the cams from a meanie installed somehow then we would have faster yet bikes.

In the case of the 1700's there IS 2 throttle bodies, and I don't know what sort of cams.

The more radical the cams the more troubles there will be with idle, and popping exhausts, so probably a touring bike cam isn't going to be very radical.

IMO the stock bikes run a bit over just waay too hot..