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Stoffregen Motorsports

Member Since 26 Aug 2010
Offline Last Active Yesterday, 10:50 AM
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#1524896 Broken timing cover dizzy mount

Posted by Stoffregen Motorsports on 21 October 2017 - 07:33 AM

I would think the tiny 6mm bolt would strip or break before it built enough force to break off that much of the aluminum cover.

 

Seems like something else happened to cause this failure.

 

Would I JB weld it? Hell no. I'd remove it and replace it or TIG weld it. But to get you back on the road in the meantime? Ok, as long as it's not permanent.




#1524700 KA Swap in 620

Posted by Stoffregen Motorsports on 20 October 2017 - 07:11 AM

Taking the engine out of a 1994 Nissan pickup and put it into my 620. There's a guy selling one for 400 it got hit but the engine is fine

Buy the whole truck. It is an easy swap, but there is some fabrication involved. Exhaust, wiring and plumbing too. Having the complete donor vehicle will help you do the swap as you will have a template to go off of.




#1524538 Expansion tank in bed

Posted by Stoffregen Motorsports on 19 October 2017 - 10:32 AM

Timming. Isn't he from South Park?




#1524536 78 Datsun 620 Smog help

Posted by Stoffregen Motorsports on 19 October 2017 - 10:30 AM

I have never used sea foam, but I thought it was just for cleaning out cruddy intakes. Mainly on EFI engines. Don't know.




#1524279 Fire truck

Posted by Stoffregen Motorsports on 18 October 2017 - 09:39 AM

Could be a Mazda Rotary pickup. I know there are a few in the wine country.

 

The convertible in front of it has me stumped. I recognize the shape, but can't place it. Almost looks like a Fiat or Alfa.




#1523922 74 620 V8 Swap

Posted by Stoffregen Motorsports on 16 October 2017 - 05:08 PM

I second that.

Or for a more positive fitment, use a v-band clamp.


#1523920 oil pan leak

Posted by Stoffregen Motorsports on 16 October 2017 - 05:05 PM

Can't see the benefit? How about no leaks...ever.

Gaskets crush and bolts gets loose causing leaks.

Move into the 21st century and ditch the old gasket in favor of the right stuff.


#1523716 Sending Unit Clean Up & Test

Posted by Stoffregen Motorsports on 15 October 2017 - 08:30 AM

Yes, it will. I was sharing a method I use for diagnosing. Sometimes the resistor works, sometimes not.

 

But the guitar amp volume knob is a trick I am especially proud of coming up with. It helps diagnose all kinds of senders and sensors. I used it in place of an EFI temp switch once while diagnosing the problem and I could affect the tuning just with the turn of the knob. Maybe I geek out a bit on that stuff...




#1523610 Sending Unit Clean Up & Test

Posted by Stoffregen Motorsports on 14 October 2017 - 04:35 PM

To figure out what your gauge actually needs, go get a guitar amp volume knob and wire it into the sending unit harness. Adjust the knob to get the desired reading, then check the resistance across the volume knob with an ohm meter. If you still can't replicate the needed ohm range with your sender, try wiring in a resistor.

I've had to do this a few times and it works great, if you have the patience to do the diagnostics, which it sounds like you do.


#1523550 motor swap

Posted by Stoffregen Motorsports on 14 October 2017 - 09:46 AM

Way to stay on topic, boys.

 

To the OP, it really boils down to a couple of things: skill level and budget. Your most cost effective path is going to be repairing the engine and get it back on the road. If you wanted to swap in another L series engine, you will need to find one if similar vintage (for emissions reasons). If you want to scrap everything and modernize the truck with a true motor swap, then start thinking about budget.

 

If you are a capable mechanic and fabricator, motor swaps are no big deal, even here in CA (polarizing topic these days). If you want to avoid the trouble of navigating all the BS here on Ratsun, feel free to contact me directly and I can walk you through the swap process. I would be glad to help, even if it's just info you want.




#1523361 '79 Strip down

Posted by Stoffregen Motorsports on 13 October 2017 - 09:43 AM

I like tailpipes because they help keep the smell of fumes to a minimum. Also, if on an off road rig, the turndown blows the dust all around and makes it unpleasant for the truck that follows. Not applicable here.




#1523215 Vibration on clutch travel.. when in gear or with engine revs

Posted by Stoffregen Motorsports on 12 October 2017 - 05:23 PM

Could be bent fingers on the clutch cover, or bent or disintegrating clutch disc.

 

I've even sen broken cranks cause that symptom.




#1523142 '79 Strip down

Posted by Stoffregen Motorsports on 12 October 2017 - 09:23 AM

Nissan L motors only really need a single muffler. For a slightly modified sound, run a 2" pipe and a mid to large turbo style muffler and then a full length tailpipe. It should sound great.




#1522925 Need help with valve adjustment

Posted by Stoffregen Motorsports on 11 October 2017 - 08:40 AM

If they haven't been adjusted in a long time, getting the lock nut loose might be a pain. Snap-On sells a special Datsun L series crowfoot style wrench that fits a 1/2" ratchet. I have one and have used it hundreds of times.

 

Adjusting L series valves requires a bit of nuance and takes a bit of time to learn how to do correctly.




#1522923 oil pan leak

Posted by Stoffregen Motorsports on 11 October 2017 - 08:33 AM

That's good advice.

 

One method I use is to pressure wash the entire engine, from top to bottom, then with a clean canvas, watch what gets wet in the next few days/weeks.