[monkeyra]

The lower kit Gouky, am I correct in saying this will be needed regardless of what supercharger I decide to go for (ie, TVS 1320 or the other option, was that a TVS 1900 or am I confusing myself?)

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[Gouky]

The lower kit Gouky, am I correct in saying this will be needed regardless of what supercharger I decide to go for (ie, TVS 1320 or the other option, was that a TVS 1900 or am I confusing myself?)

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correct, the current lower kit will worth with all the supercharger setups.

 

[monkeyra]

Would a harrop TVS 1900 fit the other upper kit you'll be creating next year or will that be for a specific other supercharger instead ?

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[Gouky]

Would a harrop TVS 1900 fit the other upper kit you'll be creating next year or will that be for a specific other supercharger instead ?

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The upper bracket is specifically for the stock Lotus/TRD 1320 supercharger. it bolts to a mount point on the snout that is only available in that application. You'd likely be able to use it as a starting point but frankly you'd be better off just making a custom upper idler for your special application.

if you show me which supercharger you have in mind i can probably speak to the compatibility.

*edit* I read the question again and may have a different interpretation. the custom intake manifold i'll be making will hold the idler so there won't be any need for a specific supercharger snout.

 

[HDavidB]

I was considering getting the monkeywrench cams ( stage 1 ) and run the GReddy Ultimate for a moderate tune around the 320 hp and leave it at that stage of build.

Reading this thread, I'm wondering now... what the approximate price of your 350 HP kit will cost using the smaller M62 SC unit ?
Assuming that I can run stock internals and tune it with the GReddy Ultimate ??

I'm driving down to see family in Georgia early March, would like to have parts shipped there so I can save on ship fees and cross border fees.
Our Canadian dollar is garbage right now at $1.35 to your Dollar so anything I can save I have to make up for the exchange !!

What are we looking at for an entry level SC unit ??

 

[Gouky]

I was considering getting the monkeywrench cams ( stage 1 ) and run the GReddy Ultimate for a moderate tune around the 320 hp and leave it at that stage of build.

Reading this thread, I'm wondering now... what the approximate price of your 350 HP kit will cost using the smaller M62 SC unit ?
Assuming that I can run stock internals and tune it with the GReddy Ultimate ??

I'm driving down to see family in Georgia early March, would like to have parts shipped there so I can save on ship fees and cross border fees.
Our Canadian dollar is garbage right now at $1.35 to your Dollar so anything I can save I have to make up for the exchange !!

What are we looking at for an entry level SC unit ??

I've actually recently had an issue with shipping to an address other than a billing address so there will be a few extra steps involved in shipping to Georgia and billing to Canada, but no worries I'll be happy to help you out on that. I just need enough evidence that i can send to the merchant account people to avoid a chargeback.

Now, onto your actual question. We have data now about how much air it takes to make 335rwhp on this motor. The current pulley has a pitch diameter of 70mm and the crank has a pitch diameter of 142mm so the drive ratio is 2.03 and the TVS1320 moves 1.320L per revolution (80.55cubic inches). the M62 moves 62 cubic inches per revolution so it would need a drive ratio of 2.64. except when you look up the max RPM of that supercharger you get a limit of 14-16k depending on where you look (realistically it's probably 14k sustained with 16k bursts) Let's be generous and use the 16k number. that limits the drive ratio to 2.22 which is about 15% less air than the current setup is making, but it's still in theory 30% more air than the engine can breathe in with naturally aspirated conditions.

In short, the M62 setup will make somewhere between 260 to 320rwhp but there's no way it'll make 350rwhp on this motor in otherwise stock configuration. This is the big reason why i did not divulge the application i was going to get the M62's from because there would be an army of people (ok, a half dozen) angry at me right now because they purchased something that is likely useless.

This actually changes pretty much *everything* because the viability of the cheap supercharger kit option was what made this whole idea good. there aren't enough people willing to spend $2k+ on a supercharger plus whatever the kit costs to justify the development of a proper lower intake manifold.

So i'm exploring other options. the trick is i need to find a car that uses a cheap supercharger from the factory (probably an M90) and has a reasonably priced bolt-in upgrade for a TVS1900/TVS2100 It's unlikely to have an upgrade to the TVS1320 since that would be smaller than the M90 that came out.

Another option worth considering is the Rotrex family that i was originally considering. They can be had used for about $1000 and new for under $2500 depending on the exact model. but conveniently it would drop the cost of the intake manifold from the equation. it would also allow people to selectively add an intercooler when they are pushing the boost higher.

i know this was a wordy way of essentially saying "i don't know". but i don't know right now. I will develop a full supercharger solution for this car yet but the future is still a bit fuzzy yet. I hope this intermediate solution using lotus/trd parts satisfies the people that absolutely want a supercharger right now. If this flops it'll be rather depressing given how many hours went into this.

 

[HDavidB]

Thanks for all the Great Info.. as for the ship & billing issues, if you setup the invoices as two transactions it should be very easy & straight forward.
Charge the parts on one invoice & the ship on another charge but We can figure that out later !!

As for the M90 - I have one off an early 1990's Ford T-Bird SC, it has the simplest mounting flange & Top Hat to either run onto an intake or over to an Inter cooler.

My first V6 project was the 1mzfe using the M90 as per another thread I found from the UK... too bad that mr2 disappeared completely from the Web ?? I know the 1mz is not the best motor to do this with but it was in my budget and cost effective to pull off myself.

It would be great to use the M90 I have for the 2gr

 

[Gouky]

That M90 is somewhat available but there's the issue that it can't be purchased new for a reasonable cost and some people care about the new cost. Also it has no TVS upgrade path available so that intake manifold would not be worth making because it would have limited value to the average purchaser. I also never want to get in the business of stocking and supplying junkyard parts because people underestimate the costs of doing something like that and just get angry at the prices. "I can buy it on e-bay for $200, why do you dare charge $400 for it!" somehow, "feel free to go buy it on e-bay for $200" is never an adequate answer.

 

[monkeyra]

I hope this intermediate solution using lotus/trd parts satisfies the people that absolutely want a supercharger right now. If this flops it'll be rather depressing given how many hours went into this.

I think it's going to depend on TVS 1320 availability, there's none on ebay UK at the moment and nothing in the UK forums at the moment.



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[slideoil]

I think it's going to depend on TVS 1320 availability, there's none on ebay UK at the moment and nothing in the UK forums at the moment.



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Agree with this. I have spent the last few days looking for the Lotus/TRD unit and am having no luck.

That being said, I'm still considering buying the upper pulley setup... Just in case I find a unicorn, but in my search, I've found that neither Eaton nor Harrop will sell the needed TVS unit, and the generic TVS 1320 won't work. You can't buy a TRD unit from Toyota without a TRD Aurion VIN (if you can buy one at all.) The Lotus unit seems a tiny bit easier to get new, but at crazy expense.

All that being said, I'm still 100% behind the work Marc is doing. I'll keep searching for the right supercharger, and if I haven't found one by the time plan B is put into production, I'll go that way. I've got more time than money anyway.

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[Gouky]

They certainly are a bit rare. i'm expecting that i'll sell less than 10 lotus/TRD upper kits total between now and when all MR2s are dead. That's why that part of the kit is priced higher despite being simpler. But it was a necessary step for a development effort on the way to the next supercharger solution. It allowed me to get the belt routing stuff all polished and working well before worrying about a costly lower intake manifold.

 

[monkeyra]

Money sent for pre buy on the lower kit. The upper kit will depend on if I find a reasonable priced TVS 1320 or an easier to find alternative with a revised upper mount you'll be working on later.

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[immorality]

What about a TVS1320 made for a Cobalt SS? They are much easier to find. Any idea how that one differs from the TRD/Lotus version?

 

[DaveMush]

I completely overlooked the difference in the VVt oil feed line.
I shall have to look into that.

 

[Dr.Pete]

I completely overlooked the difference in the VVt oil feed line.
I shall have to look into that.

If you're thinking of supercharging, you'll also need the uprated VVT oil line fitting kit. It routes the hard line away from where the sc belt needs to go and includes mounting clip and special sealing washers.

Here's a link to the Lotus Service Bulletin for upgrading the rubber line. It describes the kit and its components:

http://www-odi.nhtsa.dot.gov/acms/cs/jaxrs/download/doc/UCM431755/RCRIT-12V477-9090.pdf

.

 

[Gouky]

What about a TVS1320 made for a Cobalt SS? They are much easier to find. Any idea how that one differs from the TRD/Lotus version?

It's funny you mention that. Now that we know the M62 won't be a thing so there's no need to hold you guys back from trying to buy it then complaining i steered you wrong. the cobalt application was the application i was going for originally. it starts with that M62 which can be had for about $700 brand new and often as low as $200 used and has bolt-in upgrades available for the TVS1320, TVS1900 and TVS2100 all for quite reasonable prices. Also, since it's a common application even the upgraded units will occasionally be available used or purchased but never installed as low as $1200 for the TVS1320

In fact it's still a path i may be considering even though the M62 idea is a dud.

I completely overlooked the difference in the VVt oil feed line.
I shall have to look into that.

I did try to sneak the belt up there with the stock line but there's really no good way to do it. the TRD/Lotus oil line is a bit spendy at $160 but it seems that even with the recall most of the engines have never been upgraded to the full solid line anyways so the cost is offset by the fact you'd have to buy that other line anyways.

 

[DaveMush]

I already updated to the 2010+ solid metal line long ago.

So by the Lotus SB posted, there is not an all metal line for supercharged applications?

 

[DaveMush]

The M62 was pretty much maxed out on the 1MZ.

 

[Dr.Pete]

I already updated to the 2010+ solid metal line long ago.

So by the Lotus SB posted, there is not an all metal line for supercharged applications?

Hi Dave...

I think you may be referring to the oil line on the front of the engine that had the Toyota recall. This is the other line.

The Lotus SB refers to the oil line running along the upper left of the serpentine belt. It originally came with a rubber midsection on the early supercharged Evoras, then it was upgraded to an all metal line in later supercharged Evoras. You can see in the picture that the routing is different than on a normally aspirated 2grfe.

If you scroll down to the bottom, there is a pic of the new replacement all metal line designed to clear the supercharger belt. It bolted right on my 2gr and gave me plenty of clearance. You could always just buy the line itself to save a few bucks, and use your own washers, but it's nice to have the locating clips as well.

Peter

 

[DaveMush]

Nope, I'm referring to the same line for bank1.
The same line was affected on all 2GR equipped Toyota's. There is an all metal supercession part starting around 2010.
Although, it still follows the original non-supercharged path.
As for the gaskets for the upper bolt and vvti screen filter, I've got plenty.