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Old 08-30-2019, 08:34 PM   #16
Brad87gt
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Default Re: Some help with new SBF tt combo

Anyone ever run the oil return into the timing cover on a sbf?
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Old 08-31-2019, 03:41 AM   #17
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Default Re: Some help with new SBF tt combo

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Anyone ever run the oil return into the timing cover on a sbf?
I wouldn't suggest it. The drain back holes in the heads are already overwhelmed.
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Old 08-31-2019, 09:54 AM   #18
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I don’t honestly believe that the front drains do much of anything while going down the track. It is weird how some have issues on oil return through the heads and other so not. I have never had an issue nor have I been around one that has. Other than a few BBC’s never a sbf. Even with oilers in the covers.

I was just looking and thinking about routing the returns and thought it may be a good option. Lots of LS guys run it in the timing cover. I just want to keep it as far away from the crank throws as possible.
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Old 08-31-2019, 09:57 AM   #19
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I am still not 100% sure where the turbos will be, I want to try and keep the radiator in the stock position.
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Old 08-31-2019, 10:23 AM   #20
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Default Re: Some help with new SBF tt combo

Drain to the timing cover goes into crankcase. The fuel pump block off plate is a common place on older covers.
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Old 08-31-2019, 02:34 PM   #21
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Drain to the timing cover goes into crankcase. The fuel pump block off plate is a common place on older covers.
Right, in front of the first counterweight were you want it. my pan has a scraper and a windshield screen in it. I also have a vacuum pump. I hate to defeat the purpose of that oil control by dumping oil into the area with the most windage. Maybe it doesn’t matter but I’d like to think it does...
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Old 08-31-2019, 02:57 PM   #22
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Default Re: Some help with new SBF tt combo

Quote:
Originally Posted by Brad87gt View Post
Anyone ever run the oil return into the timing cover on a sbf?
Oops, I misread this when I commented. Yes, timing cover is fine.

Just imagine the car is doing a wheelie at 45 degrees then visualize where the oil draining from the turbos will want to go. If the turbos are forward and above that point you should be fine.

Not a lot of oil is actually draining from the turbos compared to everything else coming from the mains/rods and lifter area. But because it can be aerated going thru the turbo bearing the line needs to be larger than one might think.
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Old 08-31-2019, 04:55 PM   #23
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Quote:
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Quote:
Originally Posted by Brad87gt View Post
Anyone ever run the oil return into the timing cover on a sbf?
Oops, I misread this when I commented. Yes, timing cover is fine.

Just imagine the car is doing a wheelie at 45 degrees then visualize where the oil draining from the turbos will want to go. If the turbos are forward and above that point you should be fine.

Not a lot of oil is actually draining from the turbos compared to everything else coming from the mains/rods and lifter area. But because it can be aerated going thru the turbo bearing the line needs to be larger than one might think.
I agree with this
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Old 09-29-2019, 06:57 PM   #24
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Default Re: Some help with new SBF tt combo

So a 3000lb car with 1000whp 26 x 20 et drag. What first gear would you run in a glide 1.80 or 1.69?
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Old 09-29-2019, 07:07 PM   #25
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Default Re: Some help with new SBF tt combo

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So a 3000lb car with 1000whp 26 x 20 et drag. What first gear would you run in a glide 1.80 or 1.69?
Depends on rear gear, 1/8 or 1/4..
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Old 09-29-2019, 09:27 PM   #26
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3.55 and we do both 1/8 and 1/4
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Old 09-29-2019, 09:42 PM   #27
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Default Re: Some help with new SBF tt combo

1.80
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Old 09-29-2019, 10:28 PM   #28
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Thanks, gets shifted at 8000 or a little higher
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Old 10-02-2019, 02:20 PM   #29
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Default Re: Some help with new SBF tt combo

NGK 5671 in your heat range ( probably a 9 )

[email protected] .050 in a 321 gets you easily 7500 rpm.

1/8 mile with 1000 whp i'd run a 4.56 with a 28 inch tire
1/4 mile, 3.73 with 28 inch tire.

Adjust accordingly for tire diameter and shift rpm. But it won;t change too much. Maybe 4.30's and 3.55's if you spin it to 8000

Last edited by Marbles87fox; 10-02-2019 at 02:21 PM.
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Old 10-02-2019, 06:48 PM   #30
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Default Re: Some help with new SBF tt combo

Plan to shift about 8,000 with that manual transmission in n/a form I would leave at 8,200 to 8,500 and shift at 8,200. Thanks for the info car has 4.56 in it now, we race both 1/4 and 1/8 mile. Car currently has a 26 x 10 stiff wall et drag. I appreciate the info.
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