Some more top swap questions! Yay!

**suitercrew** · 02-27-2016

Ok so here's the deal i just checked on it and my question is it normal to hear a good amount of noise from the sc rotors? Also does low coolant or not having properly bled the coolant system affect kr and finally the bbv should be fully open when running correct?

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**Scottydoggs** · 02-27-2016

when cold the sc sounds like a pos via the intake. till it warms up. thats normal.

if its sounds like rocks tumbling at idle thats a bad coupler. easy fix.

coolant has nothing to do with kr unless your like over heating of course.

let it idle till the fans come on, top off rad as needed bleed the t stat when the fans come on. if you got a drilled t stat you dont really need to bleed it. i didnt bleed mine last time round cause the time before it just spit out coolant.

**Tonkin2000GT** · 02-27-2016

Yea a decent amount they make noise what kinda noise are you talking about though? The bbv valve should be close untill you wack the gas then it'll open.

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**suitercrew** · 02-27-2016

My bbv is always in the up position atleast when its idling in park or drive. Honestly the sc kind of sounds like what scotty said rocks banging around but its not crazy loud but noticeable also it sounds like its coming from the rotors and thirdly i just found a vac leak from the brake booster

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**timboku** · 02-27-2016

Originally Posted by Tonkin2000GT

LOL dude honestly I don't give a **** what you want to hear zzp may have there issues but they do know what there talking about hence the reason they have a 8 second drag car smfh

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I'm not saying zzp is right or wrong, but they make a business selling "kr reuducers" so of course they will tell you kr is bad, which it is, I'd say anything over 3 to 4 consistently is bad...and a turbo 8sec. Gutted drag car is great but the only stock part on that car was the block...great feat for sure though.

**Scottydoggs** · 02-27-2016

lever up is good running, rev it and it moves.

vac leak could cause some kr maybe. booster hose is a large leak maybe. would have cause a surging idle or high idle.

take the sc belt off, grab the pulley and snap it back and fourth, it you feel a click its the coupler.

heres what mine sounds like, rockers tick some injectors tick some, small pulleys make it whine at idle lol

**timboku** · 02-27-2016

What are your trims at idle??

**Tonkin2000GT** · 02-27-2016

Post a video of the bbv and sc noise? If you didn't pull the snout off the SC and change the coupler it's more then likely bad.

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**suitercrew** · 02-27-2016

As far as fuel trims i watched it for a little long term was sitting at 8.6-10 short was bouncing in between 0 and 5 until for a second the rpm randomly went down like a studder and when that happened lt trim bounced all the way to -10 and then st bounced up to 20

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**suitercrew** · 02-27-2016

Bbv is functioning properly and at start up i do get some idle surging up to about 1750rpm and that is with the motor warm now after a couple minutes it goes away

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**suitercrew** · 02-27-2016

When i had the sc out i tried tugging on the cuppler and there was zero play in it. The rotors however didnt have very good coating and i think they might scrape the housing slightly

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**Scottydoggs** · 02-27-2016

post a vid. this way we can see your vac lines and hear it.

**Scottydoggs** · 02-27-2016

and it sounds like your trims are still learning, or theres a vac leak still.

**suitercrew** · 02-27-2016

On another note torque pro is reading my maf sensor at 1.6gps with the engine off also -1.3 vaccum with the engine off???

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**idrivejunk** · 02-27-2016

Originally Posted by Scottydoggs

lever up is good running, rev it and it moves.

vac leak could cause some kr maybe. booster hose is a large leak maybe. would have cause a surging idle or high idle.

take the sc belt off, grab the pulley and snap it back and fourth, it you feel a click its the coupler.

heres what mine sounds like, rockers tick some injectors tick some, small pulleys make it whine at idle lol

I was exploring mine with a stethoscope the other day. Anywhere on the blower is super-loud, especially at tip of snout.

**timboku** · 02-27-2016

Originally Posted by suitercrew

As far as fuel trims i watched it for a little long term was sitting at 8.6-10 short was bouncing in between 0 and 5 until for a second the rpm randomly went down like a studder and when that happened lt trim bounced all the way to -10 and then st bounced up to 20

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What is your 02 reading, sounds like a vac. Leak to me

**suitercrew** · 02-27-2016

O2 readings for the most part are normal

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**SgtMarshal** · 02-27-2016

Originally Posted by Tonkin2000GT

LOL dude honestly I don't give a **** what you want to hear zzp may have there issues but they do know what there talking about hence the reason they have a 8 second drag car smfh

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zzp obviously has you sold hook, line and sinker. with enough money anyone can build an 8 second car. when you go to the car lot, do you believe everything the saleman tells you? zzp told me the xp cam is a horrible cam for a turbo, that it was super laggy and made low amounts of power. aaron deckers 600 hp xp cam turbo car is proof that is not true.

**suitercrew** · 02-27-2016

So i took the car for a test drive without supercharger and i was getting 0 kr at any throttle so... Also there is still no play with the coupler but there is clicking noise when moving it sideways like the belt would

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