More power/speed

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stericmay
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How/what can I do to increase the power/speed of my tired old petrol 230ge (460) 'G'. Is there anything I can bolt on to the engine to increase performance/reduce mpg? :twisted:

twodogs
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Re: More power/speed

buy a car
Twodogs

Maxwell Smart
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Re: More power/speed

steal piggy's G and drive it like you stole it... unfortunately not a whole lot else you can do to the 230.

stericmay
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Re: More power/speed

Cars are not as much fun to drive!

jonnyboy
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Re: More power/speed

I'd be interested in any power increases for a 230 too

dentsmithy
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Re: More power/speed

splitfire spark plugs help economy and improvement to the bottom end torque - nothing massive but noticable.
Replace the injectors - poor spray pattern = poor power and poor economy
I remember thinking that the exhaust and inlet manifolds aren't a particularly good match and have been reading up on 'porting' but nothing done as yet,
I do find that driving with the revs up helps - the 230 is not a slogger and will burn fuel - better to change down.
You could change the head for one out of a 230e or 230ce - higher compression - I did this -well worth it. extre 6bhp at least.
Change the airfilter if it's old
No doubt I will think of something else later
I've always wondered about a cosworth which is a straight bolt up to the gearbox.

fixwin38
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Re: More power/speed

Hi a restricted fuel filter. choked accumulator. wrong ignition timing. slack throttle linkeage.any or all of these things will cause a 230Ge to perform like a lead sled.....tweaked right and with regular gear changing it will add something to what is basically an underpowered G' and 26 mpg is about the mean average.....

hus55
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Re: More power/speed

buy a 190 2.3-16v and fit it :!: :D

dentsmithy
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Re: More power/speed

'
buy a 190 2.3-16v and fit it '

ie: a cosworth

hus55
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Re: More power/speed

:wink:

markvulture
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Re: More power/speed

if you are going to put a cossie lump in then get a 2.5 16, much much tougher and reliable than the 2.3 16.

hus55
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Re: More power/speed

which one had the manifold cracking problem :?

is it a straightforward fit :?:

stericmay
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Re: More power/speed

I will try some of the cheaper options, ie not putting a Cosworth in it, and advise as to what improvement there has been.

hus55
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Re: More power/speed

you want a cheap good modification.....?

1- NGK IRIDIUMS.
2- SPARK LEADS.
3-FIT A UNIVERSAL K&N APOLLO AIR FILTER SYSTEM.

The filter might be a "no-no" for many friends here in the gwoa but i too am looking into it now after going for a test-drive with shakir in his 280GEL. :shock: He also vented it out into the wheel arch and eventually contected up to an original snorkel. A FREE FLOW AIRFILTER IN A LESS THAN DUSTY ENGLAND ISNT A PROBLEM,PLUS IF IT WAS THE FILTER IS WASHABLE AND SO A LIFETIME ISSUE :wink: ONLY PROBLEM IS WADING,SO IF YOU ARE INTO THAT STUFF FIT A SNORKEL TOO!(BUT

THAT IS ALSO A PROBLEM ON 463'S TOO DUE THE AIR INTAKE BEING ON
THE FRONT WING. :oops: )

but cold air intake is a definate advantage the engine power.

check shakir's thread on the air filter system,i think it is a good economic option.

dentsmithy
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Re: More power/speed

If you have a gtrag gearbox you could change to a 4.7 box from a 308 van. The 5 speed will retain your overdrive whilst the 4.7 :1 first gear will allow you to get your revs up quickly - I put one in 6 months ago. It makes the car much more drivable and, unlike the gtrag, you are allways in the right gear - mutch better ratios. This, in it's four speed version was pretty much as Gratz originally intended before the accountants designed the gtrag.
Not a simple conversion but well worth it.

Maxwell Smart
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Re: More power/speed

hus55 wrote:
THAT IS ALSO A PROBLEM ON 463'S TOO DUE THE AIR INTAKE BEING ON THE FRONT WING. :oops: )

Hus - that is not a 463 problems. Its a G300 TD problem specifically.

shakir
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Re: More power/speed

detsmithy-can you tell us more about the gearbox change? what exactly is involved?
thanks

Russ280
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Re: More power/speed

Quote:
Hus - that is not a 463 problems. Its a G300 TD problem specifically.

Correct. I would rate the chances of getting wet feet in my 280 far higher than the 463 :D :D

Same even if the 280 had a snorkel :cry:

dentsmithy
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Re: More power/speed

Gearbox change :-
gearbox 711.117 is about 45 mm longer than the gtrag so you have to move the rear crossmember back, shorten the prop to tran box, change the clutch slave, thrust bearing, yoke. The shifter is different (R in old 1st, 1st in old second. Cosworth shifter works) and you have to extend/bent the shifter rods.
Sounds worse than it is.
Shakir - the ratios were different on a 280 so i dont know how it would work for youI am just about to put the 6.15 box in my other 230 so I will be able to do a comparison.
Gearboxes

hus55
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Re: More power/speed

i am lost,i thought all 463's had their air intake in the front wing.what happens if the water level goes above the air intake?

(this is not a dig in the ribs,i am curious....)

hus55
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Re: More power/speed

hey rus,whats wrong with your 280 :?: i am upset to hear it lets in water :cry:

i remember entering a river in nicosia during the winter of 1988,water reached the bonnet but my 300GD sailed through with 4 onboard and in SA . I cannot remember wet feet :wink:

but the bow wave was what stopped water entering the air intake.

the water level was easily above the air intake on the front wing.what would have happened if..... :shock:

mortinson
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Re: More power/speed

hus55 wrote:
i am lost,i thought all 463's had their air intake in the front wing.what happens if the water level goes above the air intake?

(this is not a dig in the ribs,i am curious....)

You are right: the air intake in all W463 bar the G300TD is where you describe: at the rear of the front left wing (V8s have a twin intake at the other wing) at about the same height as the air intake of a W460 but this is like one metre in front... so better chances of water ingress for the W460!

As for the G300TD, the air intake is behind the front numberplate. Not a very smart place to put it (ask Mark)!

Russ280
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Re: More power/speed

Quote:
hey rus,whats wrong with your 280 Question i am upset to hear it lets in water Crying or Very sad

It doesn't leak I meant it's far more likely that I would have to get out and walk home if I was in the 280 :roll: :roll:

mark
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Re: More power/speed

mortinson wrote:

As for the G300TD, the air intake is behind the front numberplate. Not a very smart place to put it (ask Mark)!

It's not quite that badly positioned,, it's next to the right headlight.
It survived this, only cause it's lower on the left :lol:

Russ280
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Re: More power/speed

Who's sat in the passenger seat to make it tilt like that? :? :?

Oh just remembered it's lhd :lol: :lol:

mark
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Re: More power/speed

:lol: :lol:

Maxwell Smart
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Re: More power/speed

Mark - I take it this picture was shot prior to your knowledge about the air intake?

mortinson wrote:
hus55 wrote:
i am lost,i thought all 463's had their air intake in the front wing.what happens if the water level goes above the air intake?

You are right: the air intake in all W463 bar the G300TD is where you describe: at the rear of the front left wing (V8s have a twin intake at the other wing) at about the same height as the air intake of a W460 but this is like one metre in front... so better chances of water ingress for the W460!

Yes - In my response I was assuming that you meant the "front front wing" as the G300 TD has - as I did figure you knew that the 460/3 had them on the side wing as they are a little hard to miss....

hus55
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Re: More power/speed

so the moral of the story is to "read the road ahead" as harald says...
and not to rely on the best 4x4 all the time :wink:

Maxwell Smart
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Re: More power/speed

dentsmithy wrote:
If you have a gtrag gearbox you could change to a 4.7 box from a 308 van. The 5 speed will retain your overdrive whilst the 4.7 :1 first gear will allow you to get your revs up quickly - I put one in 6 months ago. It makes the car much more drivable and, unlike the gtrag, you are allways in the right gear - mutch better ratios. This, in it's four speed version was pretty much as Gratz originally intended before the accountants designed the gtrag.
Not a simple conversion but well worth it.

Now my understanding is that the "Getrag" was out of a Porsche so it isn't really a cost saving thing. I think it was also a more expensive option??

As an aside I think originally the G was designed with a Porsche engine....

hus55 wrote:
so the moral of the story is to "read the road ahead" as harald says...
and not to rely on the best 4x4 all the time :wink:

well you could argue the moral of the story is to know your 4x4 as well! as if you were reading ahead based on your knowledge of any other G then you'd still end up with a broken engine....

dentsmithy
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Re: More power/speed

The 711.*** series boxes are much stronger, internally and externally.
From what I understand these boxes have a parallel shaft design which is tougher, but needs to be more accurate, where as the Gtrag uses a tolerant planetary arrangment which is easier to build into an aluminium casting which is much more temperature sensitive. I'm sure someone who knows alot more about gearbox internals than me could explain further.
Most of the army wolfs (BW) used these boxes, even on the 461s
I think the Gtrags were made for a number of vehicles including porche and dodge but I suspect it was a commercial decision. The Getrag is an easier gearbox to use and you certainly have to work a bit harder with the 711.*** but you have a mutch better set of ratios.
The 711*** in civilian vehicles was only offered as a 4 speed and mercedes offered the gtrag as a 5 speed upgrade. To make the 711.116/7 work in a 230 or 280 you have to re work the exhaust since the front silencer doesn't fit leading to yet more variations of exhaust parts at a time when mercedes were looking for volume sales in the domestic markets and trying to standardise as much as possible

mortinson
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Re: More power/speed

mark wrote:
mortinson wrote:

As for the G300TD, the air intake is behind the front numberplate. Not a very smart place to put it (ask Mark)!

It's not quite that badly positioned,, it's next to the right headlight.
It survived this, only cause it's lower on the left :lol:

Whooaaaa.... this is what we toreros call cojones :lol:

mark
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Re: More power/speed

mortinson wrote:

Whooaaaa.... this is what we toreros call cojones :lol:

No mate,, thats the last thing it is, bloody stupid is what i call it :lol:

Ignorance is bliss,, and there i was thinking, well at least me air intake is well out the water, now i know it was only inches.

Fortunately this is not where it happened.

Moral of the story is, always go laning with mates who can strip an engine, while you have a cup of tea, and with mates that have fully paid up recovery membership. :D

hot66
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Re: More power/speed

Maxwell Smart wrote:

Now my understanding is that the "Getrag" was out of a Porsche so it isn't really a cost saving thing. I think it was also a more expensive option??

As an aside I think originally the G was designed with a Porsche engine....

Any more info on teh G-wagen / Porsche relationship woul dbe great to hear :)

I'm a big fan of both :)