Really Light Stuff - Supercharger Pulley Mk II - Page 2 - LotusTalk - The Lotus Cars Community
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post #21 of 125 (permalink) Old 12-18-2009, 11:27 AM
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What about 2,9"? When?
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post #22 of 125 (permalink) Old 12-30-2009, 01:14 PM Thread Starter
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Now shipping!

Now shipping 3.0"! Designed by RLS specifically for the Lotus Exige S, S220, S240, etc.

Other sizes to follow in the coming months.

Tool included. Only at RLS.
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The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #23 of 125 (permalink) Old 12-31-2009, 12:36 AM
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Now shipping 3.0" RLS Pulley Mk II !

(P.S. 2.5", 2.6", 2.7", 2.8", 2.9", 3.0" and 3.1" are still available in the regular configuration.)
Thomasio - do you have any dyno charts for a Cup 240 with a 3.1 pulley change and no tuning?

I'm reading a lot of conflicting information on changing the pulley and wanted to get your opinion 1st hand. Tuning for us in Australia is not currently an option.
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post #24 of 125 (permalink) Old 12-31-2009, 07:48 AM
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Thomas, why the MK2 has so many holes but MK1 doesn't?

Are you planning to have MK2 in 3.1", with holes for weight saving with the tool?

S240 Exige S with BOE FW300 + over 40 mods
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post #25 of 125 (permalink) Old 12-31-2009, 07:48 AM
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Thomas, when will you have the 2,9" MK2 available?
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post #26 of 125 (permalink) Old 12-31-2009, 12:38 PM Thread Starter
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Thomas, why the MK2 has so many holes but MK1 doesn't?

Are you planning to have MK2 in 3.1", with holes for weight saving with the tool?
The holes are for weight savings, they shave a few more grams off of the weight. It is just an evolution of the design.

At some point we will do the Mk2 in 3.1" and 2.9".

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #27 of 125 (permalink) Old 12-31-2009, 12:39 PM Thread Starter
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Thomasio - do you have any dyno charts for a Cup 240 with a 3.1 pulley change and no tuning?

I'm reading a lot of conflicting information on changing the pulley and wanted to get your opinion 1st hand. Tuning for us in Australia is not currently an option.
I don't have a dyno, but there are *many* customers who have the 240 with the 3.1" pulley and no tune. PM me and we can figure out something for you to try it before you buy it.

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #28 of 125 (permalink) Old 01-03-2010, 06:35 PM
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I have an 07 Exige S. Should I go with the 3.1 pulley since I am not interested in a ECU tune? Also, do I need to change to a shorter belt?
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post #29 of 125 (permalink) Old 01-04-2010, 08:35 AM Thread Starter
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I have an 07 Exige S. Should I go with the 3.1 pulley since I am not interested in a ECU tune? Also, do I need to change to a shorter belt?
IF your belt isn't too old / stretched, you can use it for the 3.1" pulley. That is exactly what I have been running on my car ('07 Exige S) for more than a year. I recently switched to the 3.0" pulley, and that required a shorter belt. I'm still running the stock ECU, but I watch the wideband AFR at all times.

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #30 of 125 (permalink) Old 01-13-2010, 06:38 PM Thread Starter
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I've been away from LT for a week... yes, these are shipping.

Order the 3.0" Mk II via PM (I haven't added to the website yet).

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #31 of 125 (permalink) Old 01-16-2010, 04:27 AM
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Thomasio,

Are the new 3.0 available..? Also, what belt (Manufacturer/Model-Length) did you use when you went to the 3.0..?

Thanks
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post #32 of 125 (permalink) Old 01-16-2010, 05:27 AM Thread Starter
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Thomasio,

Are the new 3.0 available..? Also, what belt (Manufacturer/Model-Length) did you use when you went to the 3.0..?

Thanks
Yes they are shipping now. There is another thread that talks about the shorter belt, let me find it and I'll post it here.

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #33 of 125 (permalink) Old 01-16-2010, 05:30 AM Thread Starter
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This is from another thread:
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Originally Posted by Dan C View Post
The stock belt is a 6PK1928, the next size smaller is a 6PK1920 and this will work with the smaller pulley. Make sure the belt tension pulley still has some movement after installing the shorter belt, if not them you will have to use the stock belt. I'm using the 6PK1920 with the smaller pulley.

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post #34 of 125 (permalink) Old 01-16-2010, 07:38 AM
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Power increase with a 3.1" pulley is about 12 horsepower beginning early in the power band through to redline. The 3.0" pulley will be more than that. I recommend an ECU tune to be safe and make the most power.
Considering the 3.0 pulley for a 240S.

Could you expound on the "recommend an ECU tune to be safe" comment. What exactly is being risked without the tune and why?
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post #35 of 125 (permalink) Old 01-16-2010, 08:15 AM
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Thomasio,

Your site (links) appear to have the older pulley, not the new one with the tool..? How would I get the new one with the tool..?

Thanks
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post #36 of 125 (permalink) Old 01-16-2010, 05:00 PM Thread Starter
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Thomasio,

Your site (links) appear to have the older pulley, not the new one with the tool..? How would I get the new one with the tool..?

Thanks
You can PM me. I hate HTML so I'm procrastinating on updating the website.

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #37 of 125 (permalink) Old 01-16-2010, 05:04 PM Thread Starter
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Considering the 3.0 pulley for a 240S.

Could you expound on the "recommend an ECU tune to be safe" comment. What exactly is being risked without the tune and why?
I have run a 3.1" pulley, and now I run a 3.0" pulley on my *stock* ECU 2007 Exige S. The MAF sensor "sees" the extra air that the supercharger will pull, and adjusts accordingly.

The risk is that your fuel pump / fuel injectors / fuel maps could run out of fuel which would lean the mixture and could lead to detonation. There are dozens and dozens of people using the 3.1" and 3.0" pulleys with stock ECU, without problems, but that doesn't mean that it couldn't be a problem.

I religiously watch my wideband AFR and have never had a problem, but I want people to know that they need to be careful.

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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post #38 of 125 (permalink) Old 01-16-2010, 07:13 PM
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VF stage 2 fit

will these pulleys fit my VF2?

[B]05 Lotus Elise REV400, Stage II, BWR TB, OBX header, Moroso Oil Pan, RTD Brace, PRoAlloy Radiator, SS Break Lines, S111 Oil Catch Can, ACT HDC, Carbon Fiber Spliter, GRP Side Scoops, CF side skirts, , S111 front & rear tow hooks, tail lights-LED, Driving lights, Allitech, CF interior, 2010 Exige Spoiler, Lotus shop Seats, RA clam, Light Flywheel, ATI pulley, 2010 Exige Cup mirrors
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post #39 of 125 (permalink) Old 01-16-2010, 08:43 PM
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I just want to add that I have RLS 2.5, 2.9, 3.0 pullies (the older style) and they fit the belts perfectly, no issues at all. Of course I prefer the 2.5", but I'm running 9:1 Mahles -- puts out about 13-14 psi post IC (using the RLS larger IC + 3 chamber shroud).

Rob.

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post #40 of 125 (permalink) Old 01-17-2010, 08:29 AM Thread Starter
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will these pulleys fit my VF2?
I don't know. Does someone have a pulley to send me to compare? I'd offer a discount if you do. Please PM.

The new owner of RLS is Austin, you can contact him at: Austin0Barrett <<<< @ >>>> gmail <<<< dot >>>> com
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