turbo charging

[twinturbo]

Have to agree Davey...

And cars do have lag and doo come on boost. Less so nowerdays with variable vane turbos but even in the late 90's it was true.

My broter in law had an almost stock 4x4 Cosworth. I had a stock Volvo T5. I prefered the performance of my T5 as it was an auto. When I booted the throttle it dropped down a gear and the reves instantly rose spoolign the turbo and bringing the bust on. In Bros cossy. You would floor the throttle in 5th and wait... and wait... And WOOOOOOOOOOOOOO..

But my 250BHP 2.9 V6 has little turbo's that turbo techncis used to keep the flexibility of the V6 and give boost from low down. Sure they can't give more than 300BHP max between them but they get there very well

TT

[spud69]

Agree totally with the posts to date regards to engine size and power. In my experience the extra power, upto 170bhp, is fantastic on track and warm sunny days and you can really give the car some boot. On greasy days it all becomes a bit of a handful, recent experience with Ginge springs to light, and you cant fully enjoy the car because you are frightened to put the power down. So a larger engine car with more power and torque is going to be similar in the dry, yes it will be great to open it up down a straight but the main enjoyment is to be had blasting it round twisty B roads or on track. As long as you have enough power to safely overtake sunday drivers that's more than ample.

There are some opinions out there that anything above 170hp in a roadster is unusable, for most other then the Stig, and defeats the principles of the roadster. I would certainly agree with this. With my original engine, the 1.8cvh, there was just as much fun to be had.

Keep it cheap and cheerful and you'll be having more than enough fun. The 1.8 CVH on bike carbs is a very well matched engine to the roadster, also an easy and cheap upgrade to more power later on post IVA.

AndyH....

[gingea1pom]

Spud,

I agree, when we had our ‘moment’ on that corner, which you handled beautifully might I add, I realised I am going to have to learn to drive again. It is not like driving a Range Rover you know.

1.8 CVH power will do me for now thank you very much.

[deezee]

Originally Posted by Davey

"You can get loads of turbo engines up to 6500 rpm with out the turbo giving you more than 2 psi."

I'm sorry for being controversial but that is the biggest load of spherical sperm producing organs I've heard yet!

If you're engine is doing 6.5K RPM then you're turbo is doing upwards of 20KRPM and by its very nature it will be producing serious boost.

Any turbocharger installation that produces a meagre 2psi at those sort of speeds isn't worth having!

D.

Your just not listening I'm not saying you can get turbos that only make 2psi at 6.5K am I? I'm saying if your drive normally you can get an engine to 6.5K without going on full boost. Its not like at 3K you suddenly get 1bar boost whether you like it or not!. Thats what your wastegate is for.

The point I'm making is managed turbo engines only give you full boost when you ask for it. They are perfectly drivable engines and not some unforgivable monster people on forums make out.

Would I have a 520bhp/Tonne Caterham R500? Yes I would. So whats wrong in trying to get just halfway there with a Haynes?

[flak monkey]

Nah....what you want is a supercharger

Much more fun in a light car, and oodles of low down torque from the off....

Turbos have their place, but I dont think they are suited to lightweight cars...

But then again I am biased.

[RAYLEE29]

Thats a very clean and well put together build flak
hope mines that good one day
Ray

[Bonzo]

I'll second Rays comment. Looking great there FM

Boy this thread has started plenty of debate !!??

Just before Christmas I was taken for a serious spin in my eldests 360BHP & near equal torque Impreza.

To be honest with you folks..... It frightened the hell out of me & my ass has only now started to close again

To say that it was mentally insane would be a gross understatement !!

Personally, if thats Turbo power for you then no thank you.

I want to feel the thrill ......not be sitting in it !!??

[flyerncle]

Remove two of the four wheels that are driven and see what happens.
Off into the boonies at great speed.
I repair TT's S3's RS4/6's Porsche's etc and they are great fun to drive (legally ) and some are turbo'd and they can be driven off silly amounts of boost with variable vane technology but they weigh as much as a small bus,put large amounts of power into a 6/700kg car and you have the big brother of Frankenstiens monster,great for the track but if you want to spend your time in a field or ditch buy a tractor,you will spoil not only hours of hard work but also a fantastic sports car you have built.

Just my humble opinion.

[AshG]

Originally Posted by Bonzo

I want to feel the thrill ......not be sitting in it !!??

ROFLMAO

[gingea1pom]

Originally Posted by AshG

ROFLMAO

Ash,

It took me a second but I got it.

Cheers Ginge