Tfrasca
Active member
- Joined
- Apr 20, 2015
- Location
- Ben Lomond, CA
My high school SPG with a straight pipe sounded like an old boat, I loved it.
Same, dude, same. Only I was a few years out of high school and should have known better.
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My high school SPG with a straight pipe sounded like an old boat, I loved it.
That car looks so familiar. Were you on SAAB Central forums back in the day?
Good to know that I probably won't negate all the benefits of the twin scroll housing. Do you think there's a good reason to try to make #1 longer so it's more closely matched to #4? Would two paired 5" runners and two paired 10" runners be better than four runners that were all quite different? I ask because I may be able to add a big bend in #1, but that particular cylinder would then flow worse than it would as a straight shot.
I think it depends on how different your 1&4 length would be from your 2&3 length. If #1 was close to 2x the length of #3 then the pulses from those cylinders would reach the turbine wheel at approximately the same time, then you'd have a long wait and then #4 and #2 would reach the wheel at the same time as each other. It might give you some sort of "big bang" effect that could be interesting to study.
What fan were you using?
Yea I would move it forward to get something better. Not trying to be a negative Nancy but that spal fan is a piece of junk lol
I didn?t see your shroud situation, but I noticed a huge difference after spacing and sealing my fan shroud back 1/2?. Fan never comes on unless I?m completely stopped for a minute or two.
I?m using a 2 row scirocco, 12.5x19.5, and a single 12? fan that doesn?t move a ton of air. When I had the fan mounted with the cheap zip tie things it was on almost constantly.
How much room do you have? You're gonna need a shroud as well. That darale ain't much better without a shroud
. It's better but not by much. Over heated in traffic with my Hilux with that thing pretty easily. Get a oem fan honestly, they are usually the best quality
I ran aluminum C channel 1/2" around the perimeter of the radiator with some foam tape on the side against the radiator, and riveted a sheet of 1/8" ally to it with a 12" hole for the fan. My fan is offset, and I might do a few flapper doors on the opposite side that blow open under typical driving and get sucked shut when the fan is on, but I havent had any issues under speed, so its probably not necessary.
That sounds nice and simple. I'm sure I can come up with a suitable shroud.
What radiator do you have? Is it a double pass Scirocco style one?