Jump to content

Stoffregen Motorsports

Senior Member
  • Content Count

  • Joined

  • Last visited

Community Reputation

2,965 Excellent

1 Follower

About Stoffregen Motorsports

  • Rank
    Datsun Mechanic

Profile Information

  • Gender
    Not Telling
  • Location
    Cool, CA
  • Cars

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Stoffregen Motorsports

    Weber 32/36 dgev

    You might also want to put some spacer blocks between the firrewall and the bracket, where the linkage to the carb pivots. Those have been know to come out of the socket with the DGV.
  2. Stoffregen Motorsports

    Electric fuel pump question

    The Facet pump I linked will need new fittings, and they are NPT, so have a look at your layout before installation and make sure you have the proper fittings, ie- 90 degree, etc. The wiring, I would snip the pigtail off your existing pump and re-use it on the new pump. Whether or not you solder the connections, you should use heat shrink on the splices to keep the weather out. You don't want a bad connection on a fuel pump.
  3. Stoffregen Motorsports

    1983.5 4x4 - retirement truck

    I can't advise you on whether or not you should strip and weld, but those kind of welds are pretty normal on a frame. When I am prepping a frame, I usually take the time to hit the welds with a disc sander just to knock off the sharp edges, but I rarely find anything actually needing to be re-welded. The worst I ever saw was a 1974 Jeep CJ5 I restored a couple years ago, I did have to weld up about 60% of the factory welds on that frame. Those were so bad they were actually coming loose and cracking in areas. I can't see the welds on a Nissan frame actually needing to be re-welded. Only your eyes will tell you that.
  4. Stoffregen Motorsports

    Electric fuel pump question

    Sorry Crash, I'm going to have to disagree with you on your recommendation. The Carter vane pump is a good pump, but they are noisy and overkill for this application. A standard old Facet cylindrical type pump is more than enough to feed a stock L series. They are quiet and very reliable, and don't require a regulator. I believe they were even standard on certain Datsun models of the 70's and 80's - https://www.pegasusautoracing.com/productdetails.asp?RecId=2698&utm_source=google&utm_medium=cpc&utm_campaign=FAC-477060&gclid=EAIaIQobChMIupi1vL3C3QIVCxhpCh1gsQbfEAQYBCABEgJbT_D_BwE
  5. Stoffregen Motorsports

    What lowering blocks?

    Right. Doing things the right way is often less expensive than one would think.
  6. Stoffregen Motorsports


    A custom 2200 or 2300 with dual SU's... I would guess maybe close to 190hp on the engine dyno. Are you opposed to the sight of a KA? and you just want to stay with the L series valve cover look? One neat trick is to build a KA/Z24. Using most of the Z24 bottom and front cover, oil pan, water pump, accessory drive, it is possible to bolt up a 12 valve KA24 head. I have done this a couple times, though quite a long time ago. I know it's a long way around to having a KA24, but it looks more appropriate under the hood with all the L series front drive and water pump. You could even go another step and make a custom SU intake and run a L series distributor too.
  7. Stoffregen Motorsports


    If the 150 rwhp number is your goal, you're not going to do it with SU's. So you need to ask yourself, what do I really want? I would go for the horsepower, but I wouldn't do it with a turbo L series. I'd do a KA swap with EFI. If you're willing to deal with the tuning and hassle of owning an old school, analog, mechanical turbo and carburetor system, then go for it, but beware the pit of despair.
  8. Stoffregen Motorsports

    Mine now ('74 Cactus Green)

    Yes, nice truck indeed. I love the color.
  9. Stoffregen Motorsports

    Need Help: 720 hit pothole, died, won't start, pops when trying

    The parking lights can be used without the key in the ignition switch. Sounds like an incomplete circuit somewhere, and the circuit is "seeking ground" through your parking lights. Yes, very twilight indeed, but totally explainable with science. Did you just say that you had your truck completely re-wired? As in electrical? Have you contacted the guy who did the wiring? He could have gotten something wrong. If that's not what you meant, then another question - does your wiring have any non factory connections, ie- hack fixes? Twisted wires, blue crimp connectors, wire taps, etc? When posed with wiring gremlins, the most likely and usual suspect is bad grounds. There are a handful throughout the car that should be checked. One ground that is commonly missed is the one that goes from the engine to the chassis. They get taken off during engine work, and sometimes not reinstalled. Also, the battery negative should have a ground to the body as well.
  10. Stoffregen Motorsports

    Exhausted broke

    Cool, but not cool. You will get sick of it after about a week. So will your neighbors. No muffler is not a good way to make HP either, so if you care about that, consider having a nice custom exhaust made. Your local muffler shop can make one for under $500. You could also install a cutout if you really want the open pipe thing. If you like loud, go big, like 2.25" or 2.5" pipe. Your motor won't be able to use this extra large pipe without some mods, but it will give you a nice throaty sound, even with a muffler. I know I may sound old by mentioning this, but if the exhaust is too short, and exits under the truck, you could get serious carbon monoxide poisoning.
  11. Stoffregen Motorsports

    Need Help: 720 hit pothole, died, won't start, pops when trying

    Start checking all the electrical connections. Luckily, on a car of this vintage, there are only about two dozen, so it shouldn't be difficult. Could be the ignition switch too. They get loose from years of in-out, in-out.
  12. Stoffregen Motorsports

    Long Rod 2300 and Patina

    A guy I know just had a similar motor built and dyno'd by Rebello, and it made almost 250hp on their engine dyno, in street trim. I don't kno wif he's on here, but he goes by redbaron510 on Instagram.
  13. Stoffregen Motorsports

    Long Rod 2300 and Patina

    It's no secret how to build one of these. The rods are N85 casting out of a Z20. That motor used two different rod lengths so make sure they have the correct casting number. The pistons are 89mm bore custom forged pistons, so you will need to do some engine math and call a piston manufacturer to discuss details, or just call Rebello Racing and buy a set from them. Unfortunately, unless your L20B block is an "M2" casting, you probably won't be able to bore that large. The later M2 block has thicker cylinder walls. The preferred block is a Z20, but you can use a Z22 block in a pinch. The problem with the Z22 block is the steam holes in between the bores. Going to 89mm with that block, the machinist needs to be aware of them and bore away from them (offset bore), and even then, he could miss and bore into them.
  14. Stoffregen Motorsports

    Quick cheap 620 paintjob

    Yep. That's the whole point. Go out and do some smoky burnouts!
  15. Stoffregen Motorsports

    Need info on a 510 Stahl Header

    Anything can be done. It's just a matter of how far back you make the cut. Let us know how it works out.

Important Information

By using this site, you agree to our Terms of Use.