In search of power

[mattrsa]

Ok so I have an Aircooled 2L CU engine and I was wondering what are the options for getting more power.

I did a top end rebuild about 2 thousand miles ago and now am looking to see what are the options for more power as at even the sight of a hill the van loses speed very quickly

So what are my options and how much power gain will I realistically get?
New bigger carbs?
New Exhaust?


Let me know what you guys think

Matt

[kevtherev]

Put on type 4 short manifolds
twin Dellorto 40's
take it to gasure
then a rolling road for a rejet

it will never ever wipe the smile off you face.

ask Rich Newton, Jason K.

[jonnyshowbiz]

what he said ^^
did you re-place the heads? these are usually a bit warped just old age
short mainfolds - from state side tuning £70ish
twin dells - alfa guy or maybe alfa1750 can't remember ebay about £400ish
you will need to change the throttle linkage machine 7 - £70
rolling road Raceshack £250

you may also need an electric fuel pumup if you dont have one and a pressure regulator ( though I don't have a regulator)

expensive but amazing it won't ever be a rocket, but now mine rarely slows on hills cruise on the motorway and you can over take stuff, makes a great induction roar noise

[jonnyshowbiz]

meant to say I'm told an exhaust won't make much difference, although would like one just to make more nice noise!

[gsmoke]

My dells run great with standard fuel pump and no regulator.
My manifolds are Type 4 'empi' ones (I know!) and fit under the engine lid with the centre bar ground out.
Its the best treat my van has ever had.

[mattrsa]

thanks for the info guys

Yes I already have the electric fuel pump as the old one gave up the ghost a few years ago

No I did not replace the heads when I did the rebuild so that might be part of the problem. At the time I just wanted to get it back on the road, now having driven it for a few months I think I need more power. 50 -55 miles an hour just ain't cutting it for me.

What sort of power gain(bhp) should I expect to get it I did upgrade the carbs?

[kevtherev]

Hell thats just numbers...

cruising at 70 and never bothered with a hill ever again.

[dugcati]

...... I think I need more power. 50 -55 miles an hour just ain't cutting it for me.

hehe you not interested in a 1600 or 1776 CT then

[jason k]

yup as said



dellortos!!!

[mattrsa]

I like the sound of those numbers!

Better run off and speak to the other half and see if she fancies putting up half the cash!

[mattrsa]

anyone got a link to the exact set of carbs I need. Just looked on ebay and there seems to be so many different kinds of twin dells

[gsmoke]

You need Dellorto drla cabs either 36 or 40mm
Just looked on ebay and found these,
http://cgi.ebay.co.uk/TWIN-DELLORTO-DRL ... 1|294%3A50" onclick="window.open(this.href);return false;

Hopefully, none of the zillion screws etc aern't too seized. The manifolds shown are for an alpha (he's even put them at the wrong end!)so you need new Type 4 manifolds (drilled and tapped for the brake servo), and linkage, gaskets etc. The carbs would need new jets, chokes emulsion tubes and a carb service kit.

I found that the dellorto book http://www.dellorto.co.uk/merchandise/p ... ectionID=7" onclick="window.open(this.href);return false; was an excellent reference.
Another simpler option would be to contact either alpha1750 (he's got a webstore on american ebay) for a corrrectly jetted and refurbished set, or Jim at http://www.statesidetuning.co.uk/" onclick="window.open(this.href);return false;, he could sell you everything as a kit.

Good luck

[eatcustard]

Dont forget the K&N air filter

[kevtherev]

You need Dellorto drla cabs either 36 or 40mm
Just looked on ebay and found these,
http://cgi.ebay.co.uk/TWIN-DELLORTO-DRL ... 1|294%3A50" onclick="window.open(this.href);return false;

Hopefully, none of the zillion screws etc aern't too seized. The manifolds shown are for an alpha (he's even put them at the wrong end!)so you need new Type 4 manifolds (drilled and tapped for the brake servo), and linkage, gaskets etc. The carbs would need new jets, chokes emulsion tubes and a carb service kit.

I found that the dellorto book http://www.dellorto.co.uk/merchandise/p ... ectionID=7" onclick="window.open(this.href);return false; was an excellent reference.
Another simpler option would be to contact either alpha1750 (he's got a webstore on american ebay) for a corrrectly jetted and refurbished set, or Jim at http://www.statesidetuning.co.uk/" onclick="window.open(this.href);return false;, he could sell you everything as a kit.

Good luck

some good info there and the carbs on e-bay are just right.
If you filled in your location in your profile there may be someone close to help.

[mattrsa]

thanks kev

I have just recently (yesterday) moved to warrington.

If I did go for the twin dells I would take it to steve at gasure as I have used him a number of times and he has been great. Just got to convince the other half to stump up half of the cash

Wish me luck