This.Quote:
Originally Posted by Red90
Never driven a 300, but my 200tdi will certainly cruise at 120 if so desired.
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This.Quote:
Originally Posted by Red90
Never driven a 300, but my 200tdi will certainly cruise at 120 if so desired.
Cruise at 120...hmmmm
Yep unladen without too many hills, certainly with original size tyres.
Trip load, over size tyres, hills, racks, winches etc...only in flat country with no headwind.
I hope for some improvement when I fit my hybrid turbo and retune.
But it is just a 300tdi..happiest cruising closer to it max torque band...that is around 1900 to 2500ish
Yes. I was driving these things when they were new. Nobody had any trouble on the highway back then. All the people having problems driving at proper speeds have engines in poor tune.Quote:
Originally Posted by mrb505
..and more weight and bigger wheels and a few hundred extra thousand kms.Quote:
Originally Posted by Red90
Check compression is good, injector spray test, flush out the IC, you should have 14 - 16psi at the manifold.
If you are up to defender size tyres on auto and heavy, consider defender 1.4 tcase ratio.
Uprated intercooler will allow more fuel for noticable improvement, the double core IC is a drop in replacement. Done in a jiffy.
If your turbo impeller is in good form, no play, no oil seal issues - save the money/hassle. Look to upgrade it when it starts to fail.
Does not matter. I test and fix up people’s old TDIs all of the time. Taking them up to 120 is the first test to see if the engine is adjusted properly. When they have trouble getting there you know they need work.Quote:
Originally Posted by edddo
Taking them up to 120 is a lot different to happily cruising along all day at 120
I reckon they feel sweet at 95 true speed.
I agree. Our 300Tdi D1 auto was happiest when towing at 95-100 kmh. Used a lot less fuel too.
I want one of those hybrid turbo billets you can get. and a double core IC. if i went down that path though i would also improve my air intake system, as i think it is fairly restrictive. my exhaust is straight through, but if it wasn't i would do it too. the other thing i would do at the same time seeing as you need to pull exhaust off is to ceramic coat it and the inlet manifold. there is a lot of heat transfer between the two. this would reduce under bonnet temps too. can also tape your dump pipe with exhaust tape.
that's just my opinion. won't make a huge difference but i'm the sort of person that if i start pulling things apart etc. i go all out so that it doesn't have to be done again in a long time.
i have already plans for it. put a donaldson filter housing and filter to replace the square housing now. that would allow the snorkel to come straight in without silly turns and shape changes. hybrid turbo. ceramic coated pipe from housing to turbo. ceramic coat inlet and outlet. tape dump pipe. make a new pipe from turbo to IC and coat that too. double core IC. vents in bonnet. also put in a boost controller so that i can get it up to 18psi.
what difference would all that make. the boost, turbo and IC probably noticeable, all the ceramic coating probably very marginal difference. the better air inlet maybe marginal but i think it would complement the hybrid turbo.
in all would it be worth it in terms of cost? probably not completely. but it's my car and i will do what i want to it and in my little world it will make me happy and to me that makes it worth it. the nice proper cold air going into the engine should help it i think. even when the car is fully warmed up on a hot day, there should be minimal heat transfer between hot and cold components and let her continue to run sweet.
on a side note, the ceramic coated exhaust might make your EGT come up a bit, but apparently hotter exhaust makes exhaust gas speed up. i think the engine temps would still be lower because of the cooler charge air. so technically you could go past the 720C mark but it wouldn't necessarily mean that your engine is at the piston melting limits. not that i would take it there and i hold no responsibility for the above comments. it's just an assumption i made which one of the more knowledgeable people here could perhaps prove me right or wrong.
Happiest at 95-100 yes, but will cruise at 120 easy.Quote:
Originally Posted by edddo
265/75 muds, 1.4 trans, b/bar winch roof racks steel rear bar fridge and a bit of gear in back.