Hot Rod cams + Saleen S/C = no boost...

[JeremyH]

I doubt anyone has it but ford, its not really a part that fails and needs replaced, ford probaly doesnt even stock it, they cost 98$ from ford, but you can get one for cheap here off the forum.

19cobra93 has one for $15 shipped
http://www.s197forum.com/forum/showthread.php?t=61828&highlight=stock+crank+pulley

 

[JeremyH]

Oh and um...never swapped a crank pulley before, so anyone have any advice? don't I need a puller tool or does it just unbolt and bolt back? and is it necessary to remove anything in front of it?

Install write up, have to pull the fan/shroud and need the puller which you can borrow from an autoparts store.

http://www.s197forum.com/forum/showthread.php?t=1339&highlight=udp

 

[Lupo222]

Thank you so much! I sent him a PM.

 

[tmcolegr]

Here's the crank pulley.

I just looked at the WP pulley and it has a ford part # on it but i can't read it. i have a picture of that as well.

If you need a better picture, let me know...

I would say you've found your lack of boost problem - not the cams!!

SpongebobGT asked this exact question back in post# 24.

 

[Lupo222]

I would say you've found your lack of boost problem - not the cams!!

I really really hope you're right because God, I love my Hot Rods sound!! You think the crank pulley could be responsible for 4-5psi??

 

[tbrock]

glad you figured it out. I had udps on my car and went back to stock prior to the Saleen install. Goodluck.

 

[tmcolegr]

You think the crank pulley could be responsible for 4-5psi??

The combination of an U/D crankshaft pulley and belt slip could easily account for 4-5 psi loss of boost.

Step 1 of any Saleen S/C installation is to remove any previously installed U/D pulleys and install the OEM balancer. Surely you read that in the install instructions right??? That is why aftermarket companies (Innovators West, ATI Performance Products, etc.) offer O/D crankshaft pulleys - to increase boost.

Install the OEM balancer, 90mm metal smooth idler pulley next to the P/S pump, V10 W/P pulley and the belt that I have recommended and you'll be good to go.

PS: the engineering number that will be stamped or laser etched on the stock 2005+ 4.6L W/P pulley is XL3E-8A528-AA. The engineering number that will be stamped or laser etched on V10 W/P pulley is XC2E-8A528-AA.

 

[Lee's05GT]

I have the thumper cams in my 05 and when i went to get it tuned it wasnt picking up boost at all, come to find out the vacuum lines were ran wrong. Saw about 9lbs with 3.2 pulley.

 

[NjsGT]

Oh and um...never swapped a crank pulley before, so anyone have any advice? don't I need a puller tool or does it just unbolt and bolt back? and is it necessary to remove anything in front of it?

UDP's= Death to boost....
You will need some kind of gear puller to remove it, they are on there kinda snug..... You will also need some good black rtv silicone to put the stock one back (A nice bead has to be applied in the keyway)

 

[tmcolegr]

I would still like to see how his vacuum lines are run.

 

[tmcolegr]

UDP's= Death to boost....
You will need some kind of gear puller to remove it, they are on there kinda snug..... You will also need some good black rtv silicone to put the stock one back (A nice bead has to be applied in the keyway)

Might also want to mention he will need a new balancer bolt as the OEM balancer bolt is TTY - one time use.

 

[NjsGT]

Might also want to mention he will need a new balancer bolt as the OEM balancer bolt is TTY - one time use.

Yes, that is true.... OP, that bolt is TTY.... Head to your local ford dealer and pick up anew bolt....

 

[Lupo222]

Ok, so the key way needs a bead of RTV silicone, and I'll need a 3-jaw pulley puller to get it off. I'm going to goto teh autoshop on base so i can use air for this.

My car was running like 10.2 a/f ratios...you think with the new increase in boost, teh a/f should balance out to around 11:1?

 

[JeremyH]

More boost means more air so yes it will be leaner. I would get it retuned for wot.

 

[UltraKla$$ic]

Glad the problem was found.

 

[NjsGT]

Ok, so the key way needs a bead of RTV silicone, and I'll need a 3-jaw pulley puller to get it off. I'm going to goto teh autoshop on base so i can use air for this.

My car was running like 10.2 a/f ratios...you think with the new increase in boost, teh a/f should balance out to around 11:1?

The bolt too.... Theres going to be a large flat washer under the bolt head, you can re-use that...

Also, this is how your sopposed to re-install the pulley and bolt...

Stage 1: Tighten to 90 Nm (66 lb-ft).
Stage 2: Loosen 360 degrees.
Stage 3: Tighten to 50 Nm (37 lb-ft).
Stage 4: Tighten an additional 90 degrees.
Thats right out of the ford service manual

 

[Lupo222]

thanks! as for retune, i have a BBR email tune right now set for the 3.4" pulley, but it runs REALLY rich right now so I think when I get the boost worked out, it will be spot on, but I'll do a few dyno pulls to check boost readings and a/f readings, as well as get some accurate HP numbers.

with the 3.4", I should still be in the "safe" zone for the motor right? I'm hoping for around 460rwhp. Thats been my goal all along

 

[matt06]

for what its worth the crank pulley from an underdrive pulley set i had from when my car was n/a was the same diameter as the innovators west 10% overdrive pulley i just installed.

 

[Lupo222]

that doesnt make sense....are you still seeing the same boost or better?

 

[matt06]

not sure, installing the overdrive while putting on the whipple. but the 10% od is susposed to add a pound or two. but your right on your car that doesnt make sense as it should be adding boost then not taking it away.....