was thinking about doing the blower pulley mod but what else is needed to complete the mod do i have to change the idler pulley or get a smaller belt? and does the car need to be tuned after a pulley upgrade?
blower pulley mod(what's needed?)
- Thread starter DirtyDan10
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I'm interested as well. From what I understand though the smallest you can go is 2.76. You will need a smaller belt as well as a tune. Some people experience belt slip so they add a tensioner as well. Hopefully someone else will chime in as I am not 100% sure myself!
If you go with a smaller upper pulley, it is a good idea to get an auxilary idler too. You will need a shorter belt and a tune, as well as different plugs.
belt selection guide.
Belt Guide
Belt Guide
what kind of plugs?
NGK TR6 plugs. Where you at in Illinois?
by ohare..............u?????
A pulley upgrade can be tricky. You might or might not need help with fuel. Some do, some don't.
I would get a 4 piece idler set. The stock stamped steel idlers are prone to explosion.
New plugs as mentioned.
Yes, you WILL need a tune. Without a doubt. Running an upper without a tune is the best way to buy a new motor.
As for the fuel, I added a boost-a-pump and it covered my needs for fuel. Some people get away without it though. Your tuner will know for sure whether you need help with fuel.
I would get a 4 piece idler set. The stock stamped steel idlers are prone to explosion.
New plugs as mentioned.
Yes, you WILL need a tune. Without a doubt. Running an upper without a tune is the best way to buy a new motor.
As for the fuel, I added a boost-a-pump and it covered my needs for fuel. Some people get away without it though. Your tuner will know for sure whether you need help with fuel.
wow not what i expected but makes sense if i want 6-7 more pounds of boost, and i love the m-1 btw! :rockon:
Yeah, but the power increase for the amount of cash you spend is completely worth it. These cars are quick in stock form, but man I tell you, once you do the pulley, it's how the car should have come from the factory. It's so much fun!
Plus, most tuners will charge you a flat rate up front, and then only dyno time in the future if you ever need a re-tune for more power, etc.
Plus, most tuners will charge you a flat rate up front, and then only dyno time in the future if you ever need a re-tune for more power, etc.
2.76" Pulley, 3-100mm idlers, 90mm Aux. idler, will require K080760 belt. You MUST get a tune and fuel help like a BAP. If youre going that far, buy 60# injectors and get your bower ported too. That combo will net you ~500hp.
i no, i seriously cant wait!
isnt it a risk porting a blower doesnt a person really have to no what hes doing? if i really wanted to go bananas i did think about a whipple.....
nice!
2.90 pulley here. No idler, no other mods aside from a dyno tune. Stock intake and stock catted exhaust made 444/447 to the tires.
Usually a tune is needed, but if you're going from the stock 3.65 to an upper larger than 3.2 (very uncommon, of course) it isn't always necessary. Even then, always check the A/F to be safe. Pulleys as small as 2.60 (which requires machining of the blower snout) are available. Here's a video of a 2.60 upper with a 4 lb. lower and ported blower. Gotta love that blower whine!
[youtube_browser]kMy7so7cbcQ[/youtube_browser]
Dirty Dan, I recommend you browse through my Terminator FAQs. You'll find a lot of good, basic, helpful info. There is even info related to this very question, and more, including belt sizes. Browse down to the Modifications section. Here's the link. Terminator FAQs
Hub for pulley
Pulley (2.93 or what ever, some times a tune will work for say a 2.93 and a 2.76, always check on dyno for sure though)
the idler pulleys
New idler bracket/pulley for better belt wrap
Spark plugs (NGK TR6-IX (Iridium) gaped .38 is what I did)
Tunner/Tune
You may need maf/pumps etc who knows but generally on a 2.93 you are ok~ cold weather makes it worse so if you are borderline in the summer you will be unsafe when its colder.
Pulley (2.93 or what ever, some times a tune will work for say a 2.93 and a 2.76, always check on dyno for sure though)
the idler pulleys
New idler bracket/pulley for better belt wrap
Spark plugs (NGK TR6-IX (Iridium) gaped .38 is what I did)
Tunner/Tune
You may need maf/pumps etc who knows but generally on a 2.93 you are ok~ cold weather makes it worse so if you are borderline in the summer you will be unsafe when its colder.
2.76 or 2.8 is the most common upper only size.
A 4 idler/aux pulley setup is highly recommended as per the stock pullies tend to explode(as stated above)
A Diablo Sport MAFia or SCT BA MAF might be needed
NGK TR6 plugs gapped to .32-.35
A KB BAP might be needed if your pumps are at 100% duty cycle
An SCT handheld programmer and a custom tune on a Dyno is needed
An intake system or exhaust help too
If you don't have an intake yet but want one, get it before you get the tune so you can get it tuned all at once and not have to go back for a retune
BTW, a stock size belt will work for a 2.76/2.8 if you have an aux idler but buy a spare just in case you shred it. You don't want to get stuck somewhere running on only battery to get you home.
A 4 idler/aux pulley setup is highly recommended as per the stock pullies tend to explode(as stated above)
A Diablo Sport MAFia or SCT BA MAF might be needed
NGK TR6 plugs gapped to .32-.35
A KB BAP might be needed if your pumps are at 100% duty cycle
An SCT handheld programmer and a custom tune on a Dyno is needed
An intake system or exhaust help too
If you don't have an intake yet but want one, get it before you get the tune so you can get it tuned all at once and not have to go back for a retune
BTW, a stock size belt will work for a 2.76/2.8 if you have an aux idler but buy a spare just in case you shred it. You don't want to get stuck somewhere running on only battery to get you home.
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