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Thread: ysi help

  1. #1
    Junior SCH Member
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    ysi help

    i just installed a ysi kit on my 90 lx mustang with a 351 windsor engine..the t/b inlet tube is hitting my cowl 4 inch hood...got any help on what i need to fix my problem...thanks, curtis@inetgenesis.com

  2. #2
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    Are you running drop motor mounts?
    Chris
    9.05@152 with a T-Trim on BFG Drag Radials
    NMCA SR6381

  3. #3
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    convertable engine mounts

    i am useing convertable motor mounts

  4. #4
    SCH Moderator BLOWNBY's Avatar
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    I had to use HP drop solid motor mounts $90. Lowers motor 3/4 inch. Perfect clearance. And I also have 4 in cowl
    When you get that bad boy dynoed, give me your details. Also what is your setup. and what pullies.

    I have a RR 2.7 for the YSI if your interested, I'm going to the 2.5" The 3" Vortech pulley only gave me 16 psi and would slip a little at 6,000 RPM. The 2.7 held better at even higher RPM's plus mor elike 20psi. I want to switch to the 2.5" for more low end and keep my shift point at 6200 RPM. Not looking for more top end power per say. But it's always good.

  5. #5
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    ysi rentagade kit

    Quote Originally Posted by BLOWNBY
    I had to use HP drop solid motor mounts $90. Lowers motor 3/4 inch. Perfect clearance. And I also have 4 in cowl
    When you get that bad boy dynoed, give me your details. Also what is your setup. and what pullies.

    I have a RR 2.7 for the YSI if your interested, I'm going to the 2.5" The 3" Vortech pulley only gave me 16 psi and would slip a little at 6,000 RPM. The 2.7 held better at even higher RPM's plus mor elike 20psi. I want to switch to the 2.5" for more low end and keep my shift point at 6200 RPM. Not looking for more top end power per say. But it's always good.
    ...I AM GOING TO HAVE MY CAR TUNED AND DYNOED TOMORROW...WILL I HAVE TO HAVE A CHIP BURNED FOR IT ALSO? I HAVE A 393 STROKER WITH 10 TO 1 COMPRESSION...I DONT KNOW IF THE 3 INCH BLOWER PULLEY AND THE 8 INCH CRANK PULLEY IS THE RIGHT BOOST FOR THE 393 EFI...DO YOU KNOW HOW MUCH THE 3 AND 8 INCH PULLEYS PUT OUT? WILL IT BE TO MUCH BOOST FOR MY 10 TO 1 COMPRESSION....THANKS FOR YOUR HELP....CURTIS

  6. #6
    SCH Moderator regattacoupe's Avatar
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    I can't say what the boost will be but i wouldn't go to the dyno without some 112 in the tank!
    89 Coupe with parts stacked inside of it and about 30#'s of dust on it with no end in sight. :weird:





    Although I am collecting parts for a 12.5:1 393 :D

  7. #7
    SCH Moderator BLOWNBY's Avatar
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    Quote Originally Posted by curtis
    ...I AM GOING TO HAVE MY CAR TUNED AND DYNOED TOMORROW...WILL I HAVE TO HAVE A CHIP BURNED FOR IT ALSO? I HAVE A 393 STROKER WITH 10 TO 1 COMPRESSION...I DONT KNOW IF THE 3 INCH BLOWER PULLEY AND THE 8 INCH CRANK PULLEY IS THE RIGHT BOOST FOR THE 393 EFI...DO YOU KNOW HOW MUCH THE 3 AND 8 INCH PULLEYS PUT OUT? WILL IT BE TO MUCH BOOST FOR MY 10 TO 1 COMPRESSION....THANKS FOR YOUR HELP....CURTIS
    10:1 is pretty steep for a blower. With the 8 & 3" pullies I made 16 psi at 6,000 RPM. I have no idea as to what you'll make with that compression. If you could get you compression down around 8.5 or 9 to 1 you should be making in excess of 700 RWHP.

  8. #8
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    I run a 10 - 10.5 compression 306 with 18 psi on 100 - 104 octane and have had very few problems.
    Chris
    9.05@152 with a T-Trim on BFG Drag Radials
    NMCA SR6381

  9. #9
    SCH Moderator BLOWNBY's Avatar
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    Give me some info on the car. Also Sriver or pass. side. What type of numbers did you make. What is your timing and do you have the msd BTM?

    Thanks

  10. #10
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    It is a typical NMRA Real Street car. TFS TW heads unported, TFS street heat intake, stock cam, and passenger side Novi 2000. It makes around 560 rwhp. I use an Autologic chip with approximately 27/28 degrees under full boost.
    Chris
    9.05@152 with a T-Trim on BFG Drag Radials
    NMCA SR6381

  11. #11
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    s/charger

    Quote Originally Posted by RSNovi
    It is a typical NMRA Real Street car. TFS TW heads unported, TFS street heat intake, stock cam, and passenger side Novi 2000. It makes around 560 rwhp. I use an Autologic chip with approximately 27/28 degrees under full boost.
    .....i have 42 lb injectors in my 393 stroker engine...how much hp are the 42 lbs good for? thanks, curtis

  12. #12
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    I switched to 55#. 42's didn't support 550+ rwhp.
    Chris
    9.05@152 with a T-Trim on BFG Drag Radials
    NMCA SR6381

  13. #13
    SCH Moderator BLOWNBY's Avatar
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    My 42's worked with an FMU with about 520 rwhp. I now have 60's

  14. #14
    SCH Moderator BLOWNBY's Avatar
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    Quote Originally Posted by RSNovi
    It is a typical NMRA Real Street car. TFS TW heads unported, TFS street heat intake, stock cam, and passenger side Novi 2000. It makes around 560 rwhp. I use an Autologic chip with approximately 27/28 degrees under full boost.
    What tranny? If Auto stall coverter? What do your sixty foots look like. Also what size rear slick and gear.

    Thanks

  15. #15
    Senior SCH Member
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    Quote Originally Posted by BLOWNBY
    My 42's worked with an FMU with about 520 rwhp. I now have 60's
    Good point, I didn't specify that I was not running an FMU.
    Chris
    9.05@152 with a T-Trim on BFG Drag Radials
    NMCA SR6381

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