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Old 01-18-2009, 08:29 AM   #2476
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Knowing all of the Picco derivates, I have to say that the LRP is the fastest of them. It has the most agressive timing too.

As with all Picco based engines, it has gobs of bottom end power and with the correct pipe it also has very good top speed. Therefore, you should run 18 teeth on your first gear pinion and depending on track size, go with 23 - 24 on second gear.
Accordingly, you can also go smaller on your spur gears, not bigger.

If you gear a Picco too low, it will be hard to control out of the corners, ruin your tires and wind out early on the straight.

Pipes: Picco 2607 for small to medium tracks, great bottom end, great fuel mileage, awesome sound :-)

IDM 2617/LRP 2644: for medium to long tracks, still good acceleration, great top end, fule consumption is a tad higher than with the 2607

As for the nervousness, I would recommend half a can of beer to calm you down a bit, but knowing that this would be an outcry at an American track, I won't

Eat a banana 10 minutes before you're up.
Thanks for the advice mate. Much appreciated. I currently have the LRP 2644 pipe on my car, its been working real good so far, for me atleast.

I think you got it spot on with the tyres. Ive been having some trouble coming out of corners smoothly. I really have the straighten the car up before i can floor it. So im guessing this has a lot to do with the pinion, and I also read on here that the 25t side pulley option that was given with the car also contributes to tire wear. So far ive been spending money on tires the most, one new pair of rear tires every 4 tanks or so.

But one question tho, after running with the 25t side pulley, we tried to swap it for the 24t the other day, and the belt just wouldnt hold on the pulley, its like the pulley's diameter is too small compared to the 25t and the belt is just hanging too loose. The belt tensioner is at its max already, cant be tensioned any more. Is it possible that the belt has stretched? Because there was one incident when i was driving and the belt just flew off while taking a corner. My dad said its possible that a stone got wedged in the pulley so the belt came flying off..

Thanks for all the advice guys. You guys have been a great help..
Chris,

Ps: I'll try the banana trick next time im at the track.. hehe.. thanks Stefan
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Old 01-18-2009, 09:30 AM   #2477
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If I'm not wrong, you need to flip the belt tensioner ( flip it toward the front ) to gain extra belt tension if you plan to use 24T pulley.

There is another way, which is to use two teeth or three teeth shorter belt from another car maker.
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Old 01-18-2009, 12:37 PM   #2478
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If I'm not wrong, you need to flip the belt tensioner ( flip it toward the front ) to gain extra belt tension if you plan to use 24T pulley.

There is another way, which is to use two teeth or three teeth shorter belt from another car maker.
I'll make sure i try that tomorrow. Its 3am right now, and im afraid to do anything on my own, just in case i break something on the car trying to fix something. I'll just wait for my dad and do it tomorrow night..

Thanks buddy..
Chris,
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Old 01-19-2009, 02:28 PM   #2479
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Someone refresh my memory, is it bigger pinion smaller spur for more top end?
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Old 01-19-2009, 02:32 PM   #2480
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Someone refresh my memory, is it bigger pinion smaller spur for more top end?

When ever you make the pinion and spur closer to the same tooth count you increase top end. (ie a bigger pinion and smaller spur = more top end)
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Old 01-19-2009, 02:32 PM   #2481
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Someone refresh my memory, is it bigger pinion smaller spur for more top end?
You are correct.
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Old 01-19-2009, 03:59 PM   #2482
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Hi guys,

is there a simple way to put a Sirio EVO 4 STI in a Mugen MTX4????

I have tried to mount one in my car and the carburator slide is hitting my top deck completely.

Do I have to butcher the radio plate or raise the engine?

Thanks
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Old 01-19-2009, 04:13 PM   #2483
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You should be able to loosen the set screw in the uniball and rotate it alittle and that will let you clear the radio plate.
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Old 01-19-2009, 04:18 PM   #2484
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Hi guys,

is there a simple way to put a Sirio EVO 4 STI in a Mugen MTX4????

I have tried to mount one in my car and the carburator slide is hitting my top deck completely.

Do I have to butcher the radio plate or raise the engine?

Thanks

Just Shim the motor up.....
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Old 01-19-2009, 04:41 PM   #2485
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Originally Posted by stefan View Post
Hi guys,

is there a simple way to put a Sirio EVO 4 STI in a Mugen MTX4????

I have tried to mount one in my car and the carburator slide is hitting my top deck completely.

Do I have to butcher the radio plate or raise the engine?

Thanks
you should turn a little the carb and turn also the slide of the carb, that way
the carb should be very close to the brake but enough to clear the top deck, play a little with angles til you get it right

good luck
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Old 01-19-2009, 05:21 PM   #2486
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Thumbs up Super Stiff MTX-4 Chassis!

Hey Guys!

Just thought I'd post some pics of the New Super Stiff MTX4-R
70-75 Chassis by YBSlow that I received this afternoon.

Very nice craftsmanship! It also comes with the (2) removable
Carbon Fiber Chassis Inserts as seen in the attached pics.

Take care!

T
Attached Thumbnails
Mugen MTX-4R-dsc08003.jpg   Mugen MTX-4R-dsc08006.jpg   Mugen MTX-4R-dsc08007.jpg  
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Old 01-19-2009, 05:44 PM   #2487
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Originally Posted by T-BODZ Terry B. View Post
Hey Guys!

Just thought I'd post some pics of the New Super Stiff MTX4-R
70-75 Chassis by YBSlow that I received this afternoon.

Very nice craftsmanship! It also comes with the (2) removable
Carbon Fiber Chassis Inserts as seen in the attached pics.

Take care!

T


Wow, that looks nice.....
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Old 01-19-2009, 08:19 PM   #2488
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Quote:
Originally Posted by T-BODZ Terry B. View Post
Hey Guys!

Just thought I'd post some pics of the New Super Stiff MTX4-R
70-75 Chassis by YBSlow that I received this afternoon.

Very nice craftsmanship! It also comes with the (2) removable
Carbon Fiber Chassis Inserts as seen in the attached pics.

Take care!

T
I take it that you have to attach the battery before you put anything else on the chassis? I have 2 receiver packs that I use. one for practice/quals and one for the main. not sure I would like not being able to switch....
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Old 01-19-2009, 10:16 PM   #2489
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Quote:
Originally Posted by stefan View Post
Hi guys,

is there a simple way to put a Sirio EVO 4 STI in a Mugen MTX4????

I have tried to mount one in my car and the carburator slide is hitting my top deck completely.

Do I have to butcher the radio plate or raise the engine?

Thanks

i actually dremel'd a spot into my upper deck, the first time i built my mtx4. now i drop in any motor and adjust it to fit
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Old 01-20-2009, 12:15 AM   #2490
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Quote:
Originally Posted by Seisick View Post
you should turn a little the carb and turn also the slide of the carb, that way
the carb should be very close to the brake but enough to clear the top deck, play a little with angles til you get it right

good luck
I did both, angle the carb and rotate the uniball, but the carb sits so low that the slide is hitting the radio plate .

I guess I'll shim the engine a tad.
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