It appears that the screws provided w/ my V1 Alta pulley are not the correct size - am I missing something? They are not long enough to begin to catch the pulley hub when attempting to attach from the pulley body (the bolts are not quite long enough to pass through the 15% pully body)!

Thanks in advance for any help!

 

Here's a pic - as you can see, the socket head screws provided aren't long enough to pass through the body of the SC pulley body. The directions indicate that these are to be M5x16; however, not sure if that's what I actually received or if the problem lies with the pulley body. Really appreciate any help/insight as need to get the car back together!

 

Looks like you're hardware store bound now to find the correct length. Contact ALTA asap to let them know.

Jeremy

 

Those look right to me. Have you tried assembling the two parts of the pulley together to make sure everything fits? The inner piece (collar) fits inside the grooved outer piece, so the four bolts don't have to pass all the way through the grooved outer piece.

Is this pulley new or used? The two pieces should slide together easily to form a single unit that's not much wider than the outer grooved portion.

EDIT - and looking at the picture of the bolt, it appears to be around 13/16" long. That would be about 21 mm end-to-end, so the threaded portion looks like about 16 mm. I really think you have the right bolts, but for some reason the two halves of the pulley aren't going together properly.

 

This is a brand new unit, direct from Alta. The 2 pieces slide together, however, the screws are several mm short of even beginning to catch the collar screws (i.e. the threads don't stick out at all to allow threading into the collar piece).

Apologies for the blurry pics - camera doesn't do so well on closeups - anyway, here's another pic w/ the screws fully inserted into the body - they do not extend out at all to allow them to capture any threads on the pulley collar.

 

I did the conversion from mm to inches and the threaded portion does approximate 16mm (which would match the M5x16 designation). Assuming that the specs for the screws in the original install instructions are correct, it would then appear that the pulley might be flawed(?) Here're additional pics w/ the 2 pieces fully pressed together...

 

Here's another pic, may help provide a little more detail...

 

In this picture:



You have the top edge of the bolt aligned with the outer surface of the pulley. In that position, the threads won't be long enough. The head of the bolt should actually be recessed below the surface of the pulley, which causes the last few millimeters of the bolts to poke through enough to engage the inner collar. I'll try to find a picture.

EDIT - Here's the only installed picture I could find from Alta's site:



I don't know why all four bolts aren't at the same depth in this picture, but you can see from the lower-left bolt that the entire head is recessed into the outer part of the pulley by a good bit. I recall it kind of being a tight fit to get the bolts into the recesses when I put the Alta V1 on my wife's car.

 

Also, could you re-shoot this picture from the other side so I can see where the bolt heads are relative to the face of the pulley?

 

Thanks for the feedback and insight on this! There is a recess for the socket screws within the pulley body (see 1st pic below) - however, they do not pass far enough through the bore to leave any thread exposed (see pic 2 - all 4 screws and lock washers are fully pressed into the pulley body). Pic 3 shows the width of the collar and the relative amount of recess on the back of the pulley body - can see here that the collar does not have a lot of room to seat into the body; finally, Pic 4 shows collar fully pressed into the body (by hand).

Pic 1


Pic 2



Pic 3


Pic 4

 

I'm at a loss - the bolt in pic 1 certainly looks like it's far enough into the recess to have *some* thread poking out the other side, even without the split-washer being compressed. Just for grins, have you tried inserting the bolt without the split washer to see how much thread sticks through?

I've asked ADAMSALTAMINI to take a look at this thread - as the manufacturer, he should know at a glance what's up.

 

Thanks again ScottRiqui! I did check out what it looks like without the lock washers - here are a couple pics. Pic 1 shows the relative seating in the recess of the pulley body without the lock washers; Pic 2 shows the rear of the pulley body with the screws fully inserted without the lock washers - as you can see, the bolts do not allow any exposed thread to capture the pulley collar.

I have also left a message with Alta's offices, but don't expect them to be open on the weekend. I appreciate the resourcefulness of this forum - just wanted to ensure that I wasn't missing something obvious if there was any way I could get my car back together before the work week to allow me to drive the car. I have every confidence that Alta will help to resolve the issue.

Pic 1


Pic 2

 

Yep - looking at the last two pics you posted, those screws are definitely too short. In pic 1, they're recessed into the outer piece what I would consider the "normal" amount, but it's obvious from pic 2 that there's still no exposed thread to grab the inner collar.

Looks like a trip to the hardware store's in order.

 

Wow, I can't believe there are so many pics... it's simple those bolts are too short. I would size the bolts to be flush with the end when the two halves are fully screwed together, so you need ~another 5mm.

Contact Adam at Alta through his PM here, you should get a quick response.

https://www.northamericanmotoring.co...er.php?u=36215

 

There were only so many pictures because I was asking the OP so many questions. It wasn't until last set of pictures that I knew for certain he had the bolts all the way down into the recesses. On some of the V1 pulleys I've installed, the head/washer of the bolt was a tight fit into the recess, so it would have been easy for him to think he had the bolts fully-seated when they actually weren't.

Looking more closely at the ruler in the first post, it looks like the threaded portion of the bolt might actually only be about 14 mm long, and you lose a little bit of the thread to the washer, so you probably just got shipped the wrong bolts by mistake. Maybe the V2 uses shorter bolts?

But yes - those bolts are too short. The curious thing is that they appear

 

Trip to the hardware store - the cap screws which came with the pulley are in fact M5x16 as specified within the Alta materials (packing list and installation instructions) supplied with the v1 pulley. Believe I'll wait to speak with Alta before attempting to install using a longer than specified fastener cap screw at this point. Just for grins, I picked up a few M5x20 screws to check clearance and they too appear too short for the application. Thanks again for the feedback.

 

Does anyone know the correct socket screws for this application? Alta has acknowledged that the ones provided (M5x16 as specified in the parts listing and Alta instructions) are not long enough. Seems unusual that the specifications my have changed relative to the documentation, but appears to be the case.

 

HEY GUYS! Sorry I was on vacation for a few days and couldn't chime in sooner. Sorry for any issues with the supplied hardware. Sounds like everything is a-ok now, but certainly a lesson learned that we need to double check these instructions and hardware another time.

PLEASE let me know if I can help in anyway further! Thanks again for choosing ALTA!