CO_VR4

iTrader: (83)

Those options will work with the front cover OFF the car; the OP had installed his front cover and was looking for options to torque to spec without access to the rear of the oil pump...

crcain

Yep understood. I think I was trying to clarify that the technique is to... by binding one gear... you bind the other gear... which allows the tightening.

Also why all the concern over loctite? Seems to me with the retaining nut completely off that sprocket would probably stay on.

turboDan

iTrader: (172)

The concerns are that if the nut did fall off and lets just say that the sprocket did stay on where do you think that the nut is going to go? It is not a good idea to have an object that large just "floating" around inside the t-belt cover as it will find a way to ruin your day.

Richard Sierra

iTrader: (4)

IIRC, if the oil pan is off you can get an open end wrench on the back of the shaft

crcain

That makes sense guys was not trying to be argumentative. Just wanting to double check I understand the reasons behind things.

cssaddictm4

iTrader: (13)

Put the timing belt on, let it tension and hit it with an impact gun? Just an Idea.

Blake

CO_VR4

iTrader: (83)

Impact guns are not what you should use on lug nuts, much less on a torque to spec fastener like your oil pump

turboDan

iTrader: (172)

FWIW,I have actually seen people use a 3/8 drive impact gun on an oil pump sprocket retaining nut and lets just say that a new oil pump was needed when done as the nut and sprocket came off in 1 piece as the threaded portion of oil pump was still in nut,broken clean off of oil pump

DTM

iTrader: (4)

Absolutely not a good idea.

dan l

iTrader: (3)

If the nut comes off you'll:

1. Loose oil pressure when the drive gear disengages on from the oil pump shaft.
2. Your timing belt will loose all tension and pistons will hit valves.

You'd probably scrap the head for sure if that gear came off and if its really not your day you'll spin some bearings, hurt your turbo, and more when you loose oil pressure.

Impact guns are good for cracking your oil pump gears. If you want to do that go for it.

Dido on tightening up the gear with the timing belt on.

cssaddictm4

iTrader: (13)

Not like a big impact, a small 3/8s on low torque, never had a problem with that.

DTM

iTrader: (4)

It doesn't matter what size it is. The key word is "impact"

diambo4life

Impacts are for REMOVING bolts and nuts. Final torquing should be done manually and preferably with a torque wrench. I absolutely hate working on cars where the last "mechanic" decided to use an impact to torque down bolts/nuts.

dan l

iTrader: (3)

Do whatever works for you. I don't care, its not my car.

Think about what an impact gun does and at the same time think about what this does to the oil pump gear teeth. If your fine with that great. I am not fine with that. Specifically I am not fine with stress fractures induced by sharp blows to the thrust surfaces of the gear teeth. It is, after all, a hardened gear we are talking about.

Furthermore I've tried to *remove* said pulley because I didn't care about it as I was replacing the oil pump anyways. It was impossible to remove and would have cost me my fingers had I held onto it with any amount of brutality. Even if using your trusty impact (which says a lot about how well put together your cars are) you need to secure the balance shaft in a vice or with vice grips at a minimum (and the grips are a fairly hack way of doing it IMO).

EDIT:

Welcome diambo. I remember you from the DSM boards from the day. Say at least 5 years ago?

CandCPerformanc

WOW alot of people have some strong opinions about what an impact gun can and cannot be used for. In the 17 yrs of being a mechanic I have broken more bolts removing them with air tools then installing with air tools alot has to do with experiance and knowledge of when to stop. For instance never use the impact gun as a final torque and never tighten any low torque yielding bolt all the way with the impact gun. I have even seen in the pits at the track fellow racers installing connecting rod bolts with small impact guns just to get their cars back together to get to the next round of racing and you guys cannot tell me that the pro gt and outlaw guys have no clue as to what they are doing, they just know their limits on to what they can and cannot do, not saying I have ever done such a thing. A low torque yielding thread like the oil pump shaft may brake just by tightening by hand if not careful.