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Member Since 20 Jun 2017
Offline Last Active Jan 12 2018 07:35 PM

Posts I've Made

In Topic: Datsun 620 ultimate SS exhaust

12 January 2018 - 07:38 PM

I can't remember what the stock L20B pipe diameter is, may be 2" but there's no mention of cams, head work and induction. That said I doubt it will flow as much as a 3.5 liter engine. The cross section of a 1 7/8" pipe is 2.75 square inches. If you go to a 2.5" pipe the cross sectional area jumps to 4.9 square inches. Now that's an increase in area of 77% so if a 1/78 pipe works well enough for a 2 liter engine a 2.5" pipe will support a 3.55 liter engine.

Mike, as working at an exhaust shop for 4 years I can agree with you on this. We are one of few shops who only do SS and bend manderal in house. We gurantee 3" manderal tubing for up to 600hp so it would depend on the numbers we are talking, but yes 2.5" should be enough for a 3.5L engine that's NA. Many engines up to 5L even use 2.5in tubing, really the displacement doesn't mean much as far as tubing size is concerned. Just HP and Torque. Or if turbo charged.

In Topic: Datsun 620 ultimate SS exhaust

12 January 2018 - 09:49 AM

I agree Stoffregen, and 2.5in is a great size where it will fit for covering high power. Maybe it's just me but I love the look of the miters, maybe it's just a teenager thing LOL.

And don't get me started on Midas or Mieneki.. haha

In Topic: Datsun 620 ultimate SS exhaust

12 January 2018 - 06:55 AM

Muffler is a 5x11 or 5x8 at 24 inches if I remember correctly. Sounds very deep, no rasp at all. I'll post some video of it, and as far as the miters go we use them on race cars all of the time when manderal bent tubing doesn't have a tight enough radius.

In Topic: pic of your truck

28 November 2017 - 08:49 AM

1977 620 King Cab W/ Titan rims and mirrors mounted on fenders :)





In Topic: New alternator, car doesn't shut off

25 November 2017 - 10:54 AM

I noticed the connector shown in the pic, the one for the regulator is rounded and the one pictured is sqaure. Is the second pic I posted the correct one? https://imgur.com/a/NWVSF