Engine life

[Jazzdude]

Thanks EG30, some good advise there.

I recently heard that Honda were having problems with their CVT (like the one in my Jazz). Something about the transmission oil needing to be replaced much earlier than what it says in the service manual. Have you guys heard anything like that? My car is nearing it's 60000km service, and I have never changed the transmission oil (following the manual), but should I do it in my next service? According to the manual, I don't need to do it for another 20-30000km (I think).

[vtek]

go in and ask your nearest honda dealer. The earlier Jazzs had problems with the cvt and there is a waranty campaign that requires the whole transmission to be replaced. No one could answer the question on how long the engine would last as it really depends on what the condition the car is driven in. There is nothing specifeid on the owners handbook on revving the car from time to time so the best thing to do is to follow the book and change the speeds according to that.

[aaronng]

First of all you can reach TDC on any cylinder by turning the engine by hand on a bench Claymore, so by saying you don't reach TDC when you don't revving it past 3000rpm is plainly wrong. So who is an ignorant ass this time?

You're the one who said TDC. Claymore just said the top of the cylinders. Without high rpm, the rod doesn't stretch. If it never stretches, the rings never reach the top most part of the cylinder bore. Then after tens of thousands of kms, you rev it to redline, the rod stretches and the rings come into contact with that ridge.

[aaronng]

I sold an 1988 E30 BMW 325i to a fren a few years back. I bought the car with 86,000Kms on it and I've always kept it well serviced by changing the oil no later than 7500Kms, sometimes closer 5000kms with good quality oil ( nothing exotic, Valvoline XLD 20W50 in the early days, then Shell Helix 15W50, then Havoline 5W30 in the last few years that I owned it ). I always kept cold starts to a minimum ( ie I always parked the car in the spot where I won't need to shift the car in the morning only to shut it down again ), and never pushed the engine hard until the oil temp is closer to 100C. About 2 years after he bought it from me a coolant hose blew and he kept driving and overheated the car in a major way on the freeway and cracked the head.

When they removed the head you could see the cross-hatching marks on the bores from the factory's honing machine, they were no bumpiness along the bores when you run your finger along it and the pistons were still tight in the bores ( ie you cannot move them laterally in the bores by hand ). And this was at 268,000Kms!

Were you the 1st owner of the E30? When you drove it, did you ever redline the car, say once a week?

[Hullabaloo]

How long would it take for a ridge of any significance to form if it was only ever under low to moderate loads? considering with modern engines, good lubricants, wear resistent cylinder sleeves, etc.

assuming everything is warm, no short trips etc

[SupremeKK]

man, claymore's right... if you don't rev ur engine, one day ur won't be able to rev it... kids know this...

what's the fun just stay below 2500 or 3000 rpm all the time? I mean, u don't have to rev it all day, just give it a go once or twice in a month... or in a fortnight..u'll be alright...

i don't know about other ppl's intention of buying a Honda... but i bought my honda because of its engine... honda engine is designed to deliver high rpm performance.. and that's what the VTEC's all about. If you never rev, u never use VTEC... and u have a honda... completely ruin the purpose of the engine and its engineering excellence...

anyway.. just rev it.. u will sell it before it wears out... or breaks down... trust me.

[Jazzdude]

man, claymore's right... if you don't rev ur engine, one day ur won't be able to rev it... kids know this...

what's the fun just stay below 2500 or 3000 rpm all the time? I mean, u don't have to rev it all day, just give it a go once or twice in a month... or in a fortnight..u'll be alright...

i don't know about other ppl's intention of buying a Honda... but i bought my honda because of its engine... honda engine is designed to deliver high rpm performance.. and that's what the VTEC's all about. If you never rev, u never use VTEC... and u have a honda... completely ruin the purpose of the engine and its engineering excellence...

anyway.. just rev it.. u will sell it before it wears out... or breaks down... trust me.

Should I put it in neutral and rev it? If so, what about the hand brake? Leave it on?

[SupremeKK]

no... when in a cold start, never rev ur engine. Drive gently until water temp gets back to normal.

Sometimes you might need to go quicker, push hard on the throttle and the engine would go all the way to high rpms... simply release the throttle a bit to stop rpm from climbing... (auto car will shift to higher gears if you do that) do not rev it when its not moving...(no point right?) you rev to go quicker...and quicker.. haha..

[aaronng]

Should I put it in neutral and rev it? If so, what about the hand brake? Leave it on?

Don't rev it in neutral. Free spinning the engine is also not good. Go onto the freeway (110km/h limit) and do red line acceleration. You should be able to use 2nd gear red line without exceeding the speed limits.

[Jazzdude]

Don't rev it in neutral. Free spinning the engine is also not good. Go onto the freeway (110km/h limit) and do red line acceleration. You should be able to use 2nd gear red line without exceeding the speed limits.

Mine is an auto.

[aaronng]

Mine is an auto.

Ok, then just give it acceleration to high RPM. Since it is an auto, I doubt you will be pushing your car to redline even once a day.

[kuso]

I prefer to redline in 3rd. 2nd makes car shake too much.