2zz Suoercharger

[Benlake]

Happy xmas fellow MR2 owners

I'd like another 50ish bp or so, as a gift to my Mr2. I'm looking for something cheap and reliable. What kit would people recommend?

[Carolyn]

50 bhp will not be cheap. 

[Benlake]

fair point, then the best least expensive option! 

[Carolyn]

Turbo charge. £2,500 - £3,000

[Gaz mr-s]

The 1.8 VAG conversion is gaining popularity.

[Joesson]

@Benlake
The www.has, amongst others, the following informational, or otherwise reads:

https://nashvilleperformance.com/toyota-mr2-supercharger-kits-cost-installation-and-real-world-horsepower-gains/


https://www.spyderchat.com/threads/write-up-mwr-supercharger-install.162946/

https://nashvilleperformance.com/toyota-mr2-supercharger-kits-comparing-vortech-and-aem-for-70-150-hp-gains/

[Benlake]

Thank you all for your feedback. I will save up for the Monkey wrench kit, this looks like what Im after.

I am planning a half cage and some racing seats this year, but will save up for a kit for next year.

Dropping the engine looks like it will be the best way, I might do the drive shafts while Im in there.

[Benlake]

I forgot to mention its already got a 2zz! This would rule out engine swaps.

[Joesson]

Thank you all for your feedback. I will save up for the Monkey wrench kit, this looks like what Im after.

I am planning a half cage and some racing seats this year, but will save up for a kit for next year.

Dropping the engine looks like it will be the best way, I might do the drive shafts while Im in there.

Good forward thinking and while your at it consider the clutch.

[Benlake]

Has anyone on the forum had any experience with the MWR supercharger kit?

It all seems to make sense mechanically but I don't know much about ECUs, the Apex one that comes with kit was the cheapest. Do they just plug in with map already on or is it more complicated?

[Ardent]

I feel often cheaper to buy a car with the mods done than doing self. That said at least you know what has been done.

[Ardent]

An extra 50 on a 2zz. Def not cheap.

[Benlake]

I would prob do that next time, I wouldn't have known what to look out for though, one mans good job is another mans bodge

But there is a certain bond that comes from all those hours tinkering away.

[Alex Knight]

Cheapest way would actually be nitrous.

[Benlake]

I saw a guy set his car on fire at Blyton, he was running a home made ethanal box too close to his brake line. It has put me off the idea of exotic fuels!

The supercharger looks like it should be reliable, Corolla and Lotus run them on the 2zz so hopefully the engine can handle a bit more power.

We put slicks on last few track days and we have gone from being similar to budget sports cars and hot hatches to clearly quicker. But slower than the M3s, Caterhams, Mclarens etc..

I'm hoping with 250bp ish it will be more fun, it's painful down the straights when we drop out of lift on the exits.

[simonrobinson]

Superchargers are let down by their lack of charge cooling, tight space install on the bulkhead side of the engine bag and their very high hardware costs. On the plus side they are very easy to tune. Keep in mind those parcels from the USA keep arriving with very large customs and VAT bills on top.

If the aim is to push half a bar into it strongly look at turbos instead, you can buy a used subaru td04 turbo £150, aliexpress cast turbo manifold £95, diy welded exhaust with vbands etc £150, mamaba oil feed and drain £120, used apexi PFC £600, charge cooler and boost pipework £300... plus a new wideband kit, injectors and other bits about £600. Approx £2000 you can have that boost you are looking for with more flutter and chatter plus that extra drama of the spool and bipolar nature.

[Benlake]

Hmmm you raise an interesting point.

I have seen a lot of turbo cars spending most of the day standing around with their bonnets up, which has put me off going down the turbo route.

The lag I can do without, defo good for a bit fun on the street but I prefer linear power for track.

[simonrobinson]

Broken car is just a normal thing for this radical journey, especially when you are shoving a charge at it, most are poorly put together by amateurs on a budget working on their drive. This is all about the quality of the install and calibration.

Choosing a supercharger over a turbo charger is not a guarantee of reliability in the slightest, do not kid yourself! The monkeywrench dyno sheets on their supercharger pages are questionable - the stock line seems a bit ropey for a starters as it is way down on torque and the lift dip is in the wrong rpm, and it dips too hard - this stock line is very weak, almost 20%, albeit a lot of 2zz cars are down on power.

You have to be realistic if you can take this sort of project from parts shopping, to initial install, then the very long crawl on to a polished setup. It is a little bit of money, a large amount of time, endless patience, mixed skills and willingness to learn as you go. Understanding your chosen engine management and interpreting datalogs to come up with adjustments is a big part of the fun.

Make sure you budget for more clutch too as you'll need it, any boosted 1zz/2zz on a stock clutch isn't making much oomph, half a bar of cool charge will slip a stock clutch. Lag is not a big worry on track as you are on the boost all the way, the 2zz is gutless off cam anyway. Isn't a supercharger basically never ending turbo lag after all    I'd say the turbo has way more grin factor than a charger all day long and at far less then half the price plus more scope for growth.

If you can do it, rock on as its the most car fun you'll have in years! Spicy Roadster is irreplaceable, I have a home made turbo 1zz car and its brilliant.

[Two's Company]

Isn't the cheapest option to buy a different car with the power you want?

[Benlake]

There is no way Im selling the car even if I won the lottery tomorrow! It would feel like cheating on my wife

I will drop the engine (I put it in so have some experience there), this should make the install more straight forward.

Take your point regarding cost and future power of turbo, but I'm set on trying this MWR supercharger.

I'm after 230-250 ish for now. If I want more after that (or win the lottery tomorrow) it will be a v6.

Just put a new clutch in last year when I had gear box rebuilt (Luk I think) but will bear a performance clutch in mind, no point going to all the trouble and not getting the full benefit.

[Ardent]

Makes me think what a good job Mr T did with the TTE turbo. 50% more torque and extra ponies, whilst being plug n play and touota reliability.

That said, was starting with a 1zz not 2zz.

[simonrobinson]

It was before my MR2 time, but I think the TTE kit was about £5000 in 2002? Maybe a third of the price of the £17k new car. With current inflation that new turbo kit would be about half a million pounds now!

The 2zz supercharger certainly has its place and I would love to play with one, if you are looking for a linear 20% power boost its perfect. The price of buying this kit new for the gains you get would put me off personally, landing on a used charger in the UK for about £1200 I would be very tempted.

[Gaz mr-s]

The 2zz supercharger certainly has its place and I would love to play with one, if you are looking for a linear 20% power boost its perfect.

The 2zz supercharged engine isn't really about bhp, it's the torque that's impressive.  It's like driving a 2.5-3.0L V6.

[Ardent]

Flame proof underpants at the ready.

As an option. Instead of adding power, could you consider adding lightness to arrive at the equivalent value.

Haven't done the maths to know how much you would need to reduce by.

[Benlake]

I think I will just save up, I've got the cobra exhaust which is a lot lighter than the stock one. I don't fancy pulling out all the interior out, but will get some racing seats when we do the roll cage.