Superchargers

[timmy33]

Chaps, I'm looking to supercharge my 2.0l Alfa Spider..... found this part on Flea-Bay, it seems pretty reasonable. But am I being an idiot or missing something here?

http://cgi.ebay.co.uk/Electric-Superc

[Trooper2]

That's not a supercharger, it's a hairdryer.

[chuntington101]

if you want a small and efficent supercharger then take a look at the Rotex design.

thanks Chris.

[SplatSpeed]

timmy

may i suggest before destroying your spider

you consider a new engine

boosting a na alfa engine is not the best idea i have heard

consider changing cars or engine

alfas dont have a lot of tolerence for extra abuse from more power

consider an s2000

mazda mx5 has supercharger kits and turbo kits

but there is a reason they dont do them for alfas

but if you are determined to destroy this engine may i suggest nitros oxide wet kit. easy to fit and idiot proof

[350matt]

Much as I'd like to think these could do the job I suspect they're snake oil in another form.

There's no mention of volume airflow figures and a 2.0 ltr engine would need in the region of 6-7000 ltrs / min at 6000Rpm


I rather doubt a 3" axial flow fan could keep up with this let alone provide over and above what the engine needs to deliver boost.

Also if you're going to bother you really need to look at an aftermarket ECU to control the sparks and fuelling as if it did work and no extra fuel is added and the spark timing is left as standard, you stand a chance of pushing the engine into detonation and thats big bills.


One other thing to consider is that 30Amps is a reasonable amount of current, which will put your alternator under extra load, which will cost power.......

Matt

[GreenV8S]

They don't publish the technical specs, which is the first clue that this is a toy. The second clue is the size - you can't get enough power into a package that small to do any good. I'd question whether it even overcomes the obstruction of the fan and motor in the air stream. The third clue is in the wires, which look like tiddly little 15A things and not going to provide the several hundred amps you would need to provide to do any good.

[timmy33]

Hmmm it's looking like this might have to be consinged to the rather large and overflowing box marked "Timmys Daft Ideas".

Took a look at the Rotrex site, interesting bit of kit, but if it's going to cost £5k to fit one, well I can trade in my current 2.0l and buy one of the several 3.0l spiders on Auto-trader for about £4k more than my current one ( will also get a power hood, newer car, 6 speed box etc for me money )

The truth is that my MR2 exploded without warning, and I had been hunting for a Chim, I intended the Alfa to be a stop gap for a few months whilst I found a Tiv, but I have to say I've completely fallen for the Alfa Spider, and would have bought the 3.0l in the first place if I'd known how much I'd like them.

[SplatSpeed]

how did you destroy an mr2

mk1 right?????

[timmy33]

SplatSpeed said:

how did you destroy an mr2

mk1 right?????

No, MkII with 179,000 miles on the original engine, 17 years old ( 1991 ). The head gasket went, and the alternator was buggered, the clutch was going, and water ingress had started to cause rust to appear around the sills. Time to let it go after 8 years of ownership. Another PHer has taken it to work on as a project.

[SplatSpeed]

179 000 on original engine

did that not make you think of getting another

maybe a turbo????

you had it 8 yrs no probs

get another!!!!!

Edited by SplatSpeed on Wednesday 11th April 15:19

[mave]

SplatSpeed said:

mazda mx5 has supercharger kits and turbo kits

but there is a reason they dont do them for alfas

...except for the autodelta kits?

[timmy33]

mave said:

SplatSpeed said:

mazda mx5 has supercharger kits and turbo kits

but there is a reason they dont do them for alfas

...except for the autodelta kits?

what are they then?

[tr7v8]

SplatSpeed said:

timmy

may i suggest before destroying your spider

you consider a new engine

boosting a na alfa engine is not the best idea i have heard

consider changing cars or engine

alfas dont have a lot of tolerence for extra abuse from more power

consider an s2000

mazda mx5 has supercharger kits and turbo kits

but there is a reason they dont do them for alfas

but if you are determined to destroy this engine may i suggest nitros oxide wet kit. easy to fit and idiot proof

What complete & uneducated drivel!
Autodelta have been tuning these engines for years, in the US Turbo kits are available as well. What makes you think they aren't strong enough?

[SplatSpeed]

tr7v8 said:

SplatSpeed said:

timmy

may i suggest before destroying your spider

you consider a new engine

boosting a na alfa engine is not the best idea i have heard

consider changing cars or engine

alfas dont have a lot of tolerence for extra abuse from more power

consider an s2000

mazda mx5 has supercharger kits and turbo kits

but there is a reason they dont do them for alfas

but if you are determined to destroy this engine may i suggest nitros oxide wet kit. easy to fit and idiot proof

What complete & uneducated drivel!
Autodelta have been tuning these engines for years, in the US Turbo kits are available as well. What makes you think they aren't strong enough?

the fact that everyone i know with an alfa has needed major engine work at some point

the fact that all the brand new alfas i have hired have faults

what makes you think alfas are reliable are you their pr department

the warp drive depreciation caused by the lack of robustness

lets have a vote who thinks an alfa engine is a good idea to turbo charge

i know turbo charging done correctly does not harm an engine

but with an alfa why take the risk

the twin spark was needed to stop detonation at low revs because of the design of the engine

with greater pressure and a faulty single plug or lead you get detonation

please correct me on any of these points

Edited by SplatSpeed on Thursday 12th April 10:14

[wildoliver]

Anyone interested in putting a supercharger on an alfa should consider emailing me in person. I am not prepared to comment on the autodelta kits in public.

[timmy33]

wildoliver said:

Anyone interested in putting a supercharger on an alfa should consider emailing me in person. I am not prepared to comment on the autodelta kits in public.

YHM

[SplatSpeed]

wildoliver said:

Anyone interested in putting a supercharger on an alfa should consider emailing me in person. I am not prepared to comment on the autodelta kits in public.

ah Smug mode engaged

[SplatSpeed]

timmy what do you think of the idea of an mr2 turbo instead????

you had a mk2 rev 1

these had a rear suspension fault

the rev 2 and 3 are better

rev 2 220 bhp at 7 psi

rev 3 240 bhp at 14 psi

pretty indestructable

and cheap as chips

what do you think?????

[timmy33]

SplatSpeed said:

timmy what do you think of the idea of an mr2 turbo instead????

you had a mk2 rev 1

these had a rear suspension fault

the rev 2 and 3 are better

rev 2 220 bhp at 7 psi

rev 3 240 bhp at 14 psi

pretty indestructable

and cheap as chips

what do you think?????

I think the MKII MR2 turbo is possibly the most underrated small supercar on the road, tuned up 300bhp is achievable in a car that can also be your daily drive and is very light on weight. As a pure petrolhead perspective, they offering blistering performace. Of course. And for the prices they go for £4k for a good one...a bargain.

But.....I've sort of fallen for the Alfa Spider. Well for now. I guess it feels more refined, and has more well, heritage than a Toyota. I also think the Spider does look better, more of a modern classic.

[SplatSpeed]

ok so you are deciding with you heart rather than your head

as long as you realise that, that is ok

but at least you see the head side of the argument and have come to a reasoned choice

got rid of my mr2 for a rx7

boy do i want it back

in fact this weekend it may well come back to pappa