347 WITH A mp70 - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 18 Old 04-30-2007, 01:09 PM Thread Starter
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347 WITH A mp70

is a mp70 with a 96 housing big enough for a built 347, ..looking for low 10;s hig 9;s


1962 falcon stock 1992 302 short block, RHS heads, 1.5 inch headers ..bullet cam ..victor jr.. [email protected] on 26x8.5 inch slicks with 1962 suspension(under construction getting back halved)

1979 zephyr , 393w, bone stock 1979 suspension on 26-8.5 tires [email protected]
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post #2 of 18 Old 03-09-2008, 09:40 PM Thread Starter
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is a mp70 with a 96 housing big enough for a built 347, ..looking for low 10;s hig 9;s
ttt


1962 falcon stock 1992 302 short block, RHS heads, 1.5 inch headers ..bullet cam ..victor jr.. [email protected] on 26x8.5 inch slicks with 1962 suspension(under construction getting back halved)

1979 zephyr , 393w, bone stock 1979 suspension on 26-8.5 tires [email protected]
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post #3 of 18 Old 03-09-2008, 10:34 PM
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Too small.

347 really needs to start out at a T-76 and an 88 wouldnt hurt
or twin 60-66's

now twin MP T-70's would kick some serious butt, but might be
a bit laggy down low.

Democracy is two wolves and a sheep sitting down and voting on whats for lunch.
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post #4 of 18 Old 03-11-2008, 12:35 AM
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There are some people claiming 9's with a single MPT70 on tm.com. One modular went 9.30's. http://www.theturboforums.com/smf/in...?topic=98506.0

'67 coupe, blow-thru 351w S475, C4/C5, 8.8 6.38 at 110, 9.99 at 135
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post #5 of 18 Old 03-11-2008, 01:22 AM
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if my mp t70 can go an easy 10.6's with my mild 302 and 11 psi a 347 will do it with ease.

1982 Ford Fairmont Futura H/C/I, fuel injected and turbocharged [email protected]
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post #6 of 18 Old 03-11-2008, 10:02 AM
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uggggg ............

Lets do the math then, and see how it comes out on a T-70
compressor map, instead of ...... "well it should cause they run it on 302's and 289/4.6L's "
Thats great but he has a 347 ....... not a mild 302 or 4.6L mod-motor


347 X .5 X .8 X 6,000 / 1728 = apx 500 cfm N/A

11 + 14.7 / 14.7 = 1.75 PR

500 X 1.75 = apx 900cfm at 10 psi

900 X .076 = apx 69 lbs/min

Now lets plot 70 lbs/min and 1.8 PR on compressor map of a T-70


As you can see at 10-11psi and the flow rate needed for a 347 at 6,000 rpm
the T-70 is way off its efficiency compressor map.
This will put alot of extra heat into the system and give issues.

The last line on a compressor map is known as "The Choke Line"
You want to avoid going past it at all cost if possible

Definition:
Choke line: The maximum centrifugal compressor volume flow rate is normally limited by the cross-section at the compressor inlet. When the flow at the wheel inlet reaches sonic velocity, no further flow rate increase is possible. The choke line can be recognised by the steeply descending speed lines at the right on the compressor map.

You guys need to watch the bad info you hand out, "just because
someone else did it on a totally different motor". They make those compressor maps FOR A REASON !!!


Here's some good reading on how to properly pick a turbo
http://www.enginelogics.com/cmaps.html

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Last edited by r.barn; 03-11-2008 at 12:03 PM.
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post #7 of 18 Old 03-11-2008, 12:29 PM
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The MP T-70 .96 a/r turbo will get you into the 9's. Im not saying its the best choice but it will get you there.

Bad Intentions Motorsports, The secret is the tune!!!
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post #8 of 18 Old 03-11-2008, 07:12 PM
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The MP T-70 .96 a/r turbo will get you into the 9's. Im not saying its the best choice but it will get you there.
Barely and rarely.... It's just too small for a 347ci motor.

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post #9 of 18 Old 03-11-2008, 07:33 PM
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Here's an example of a 359ci running a MP T-70 .96 making 600+RWHP on pump gas. I think thats enough power to run low 10's high 9's. Correct me if Im wrong.

http://www.theturboforums.com/smf/in...topic=104745.0

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post #10 of 18 Old 03-11-2008, 07:41 PM
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the map says it won't!!


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post #11 of 18 Old 03-11-2008, 07:46 PM Thread Starter
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i don't want to have to crank the boost to the moon..around 14 psi is good.the more i read about it and learn .the more i lean toward the t-76..i don't want to buy a t70 and it not do what i want it to do then turn around and spend 1200.00 on a t-76..from what i see a t-76 will get it there with room to spare with out pushing it to the max

1962 falcon stock 1992 302 short block, RHS heads, 1.5 inch headers ..bullet cam ..victor jr.. [email protected] on 26x8.5 inch slicks with 1962 suspension(under construction getting back halved)

1979 zephyr , 393w, bone stock 1979 suspension on 26-8.5 tires [email protected]
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post #12 of 18 Old 03-11-2008, 08:49 PM
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the map says it won't!!
Im just saying, its been proven to produce 600+rwhp, enough to destroy stock blocks!!! Don't kill the messenger!!!

Bad Intentions Motorsports, The secret is the tune!!!
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post #13 of 18 Old 03-11-2008, 08:59 PM
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i was being sarcastic. somebody donate me a stout 347 and i'll show everybody a 9 second masterpower t70 car with box stock gt40x heads!

1982 Ford Fairmont Futura H/C/I, fuel injected and turbocharged [email protected]
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post #14 of 18 Old 03-12-2008, 11:42 AM
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i don't want to have to crank the boost to the moon..around 14 psi is good.the more i read about it and learn .the more i lean toward the t-76..i don't want to buy a t70 and it not do what i want it to do then turn around and spend 1200.00 on a t-76..from what i see a t-76 will get it there with room to spare with out pushing it to the max
This is a good choice. You'll be glad you went with a 76mm.

qikazz

'91 mod motor, turbocharged notchback, mid-8s... (SOLD)
'91 331ci GT, twin 76mm turbos, hopefully mid-7s...
'03 Evo, 2.0L, 68mm turbo, AWD street terror, mid-9s
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post #15 of 18 Old 03-12-2008, 09:18 PM
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Either way you go. Start planning for a better block. TURBO'S RULE!!!

Bad Intentions Motorsports, The secret is the tune!!!
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post #16 of 18 Old 04-01-2008, 04:33 PM
 
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i have a super t-70 and a 347 mexican block setup, u guys think i can get into high nines with a manual
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post #17 of 18 Old 04-01-2008, 04:58 PM
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Quote:
Originally Posted by r.barn View Post
Here's some good reading on how to properly pick a turbo
http://www.enginelogics.com/cmaps.html

Great link. Thanks.
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post #18 of 18 Old 04-02-2008, 09:30 AM
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It should be finw ith a .96 housing.
But say bye bye to your block if its factory.
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