Dahlilama

So, can't find an answer on the net so I figured someone here would know! I have a bds 8-71 blower and bds says the bolts/studs holding it down should be torqued to 12 ft/lbs. seems low to me. Mine seems to be seeping some fuel after about 5 hours of use. I have a chiller box/intercooler under mine and I'm figuring since bds does not make a cooler and the cooler would obviously effect the temperature and expansion and contraction maybe it should be torqued down tighter!?!? What do you guys think and what are you guys tightening your too? Thanks ahead of time

benjen

I believe 20

Dahlilama

Thank you benjen. Man I love this forum!!! (I would help ppl out with their problems if I ever knew the answer!!!)

benjen

Don't thank me I may not be right! It is, however, what I torque mine to also with a chiller.

Dahlilama

Yours dont leak and they didn't break or crack anything. Sounds good to me

benjen

Hang in there. I bet somebody steps up with some instruction sheet that gives the proper torque with a chiller. Does make sense that with a chiller it should be a bit more. I'm sure the 12 that BDS said is correct for the blower only.

supermx96

Here BDS website torq info:
http://www.blowerdriveservice.com/torque-specs.html

benjen

Well, there you go.........steel bolts are 15-18.

Dahlilama

Thanks supermx. It says 10-12 for aluminum. My manifold is aluminum which the studs go from the blower thru the chiller into the manifold. It says 15-18 for steel bolts which I have. It doesn't specify for a chiller. I feel like mine qualifies for both but obviously 12 isn't enough. I'll go with the 18

benjen

I think they mean steel bolts and aluminum bolts. It's a given that the manifold and blower are aluminum. So, yes the 18 is what they are saying (without a chiller). With the chiller I would think a couple of pounds more certainly isn't an issue.