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Budget Turbo Idea..... - Page 2
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Thread: Budget Turbo Idea.....

  1. #21
    So I'm trying to learn more about turbos. My research indicates that in the garret range I should be looking at a GT1548 - upto 1.7L, 100-200hp. Next bigger option is the GT2252, but it says it's more 1.7L-2.L at 150-260hp. Remembering this is for a DAILY drive on a kent engine I'm seriously thinking the GT1548 would be the one to go with for drive-able boost 2K rpm-4.5K rpm. Thoughts?

  2. #22
    maybe keep it all to one thread instead of 20 so if someone else wants to do there is a path to follow on what you have done
    call garret direct they will tell you what will works

  3. #23
    Join Date
    Mar 2007
    Location
    middle northern Melbourne
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    It is same thread, just page 2.
    www.cortina-mk1.com
    Contact me for parts.

  4. #24
    I was gunna use a WRX TD04 when i was thinking of going turbo. Cheap, reliable and plenty around.

  5. #25
    a mild pinto cam extractors and a downdraught will still put out more hp

    im only staying crossflow to avoid engineering but every other option is just better and cheaper

  6. #26
    Yeah staying 'Kent'....just because. You can always chase more HP but my pockets aren't deep enough and you have to draw a line in the sand somewhere. I think 120hp is even being way too optimistic depending on who you talk to. But in the end it's about a) driveability, b) cost, c) FUN. That last one can get forgotten but it's most important. And I'll keep updates on this thread

  7. #27
    ive decided to do the turbo thing myself
    new engine started yesterday
    711m block with 1300 pistons
    blocks been trued and shaved cleaned crack tested and taken out to 1680cc
    i have a early chambered head and aiming for 8:1 cr
    steel scat crank
    steel rods
    arp bolts
    Double row chain and high flow oil pump

    heads been ported already as a early formula ford head just needs to have unleaded seats and valve sizes decided
    im going to to go the manifold you linked but a genuine garrett turbo
    rest of the install will as per the supplied kit for fuel etc

    going to use nodiz electronic ignition

    id say 6 months before its complete and a bit longer to have engineered 9just waiting on the final list of things he wants me to do)
    aiming for 150hp to be safe and reliable

  8. #28
    Sounds cool mate. You're way ahead of me - I'm just collecting parts as the budget allows (paying off a mortgage on a single income is NOT fun) but I'm keen to see how you go.
    Are the steel crank/rods different to standard (are standard cast?).
    How come you're going with 1300 pistons? Wont the small combustion chambers in them increase the CR and take away the advantage of the chambered head? What model garret are you going for?

  9. #29
    I'm guessing the oil system should be improved to cope with the addition of an oil-cooled turbo. What upgrades do people recommend? I can only see 'high pressure' oil pumps - are these the same as high capacity?

  10. #30
    i had the 1300 pistons already, ill add a decompression plate if its not low enough
    steel can just handle higher revs before coming apart

    getting the head flow tested then will decide on the turbo

  11. #31
    Join Date
    Mar 2007
    Location
    middle northern Melbourne
    Posts
    2,557
    Turbo motors don't need a billion revs. The power/torque comes from the turbo, not revs. The torque will also be through the roof relative to a similarly powerful NA engine which will give the clutch and associated components a really hard time.
    www.cortina-mk1.com
    Contact me for parts.

  12. #32
    Torque is fun!
    I'll be sticking with my auto, which should lessen the shock on the diff (?). Apart from the BW35 which she has at the moment - are there any other auto options which bolt straight up to the 711M block?
    I'll be mostly cruising so nothing in the drive-line should be getting too hard a time.

    If I feel the need for speed I just get on my bike.

  13. #33
    In the spirt of keeping this to one thread - what fuel pressure do you think the GT5 Carb would need, and do you think I should put in bigger fuel lines?

  14. #34
    Fuel pressure baseline 4.1psi for those following this. So I'll need a rising rate regulator with a range 4/5-15psi. No dramas. I think I will replace the fuel line just in case. I'm not sure what standard is so I'll check that all out.
    Now, I have my 'rare as hens teeth in Aus' GT5 carby. I'm tossing up wether to modify my standard intake manifold by removing one of the studs, filling the hole and tapping a new thread for a stud in the correct place to locate the GT5 carby, or I could use my GT/weber manifold and make an adaptor plate to suit the GT5 carby. This would be my preferred option as it doesn't damage anything. Question is, would the slightly larger plenum on the GT manifold have a noticeable detrimental effect seeing as the carb throat on the GT5 is so small? Or am I being unnecessarily pedantic on this budget build? I don't want to file or cut the carby to suit the manifold. Thoughts appreciated!

  15. #35
    Join Date
    Mar 2007
    Location
    middle northern Melbourne
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    I'd be more concerned with what fuel pump to run rather than fuel line size.

    Adaptor plate on GT manifold sounds good (better distribution to cylinders) as long as there is room under the bonnet (should be heaps). Wouldn't worry about plenum size per se - particularly driving it around as you intend.
    www.cortina-mk1.com
    Contact me for parts.

  16. #36
    Yes pump will be an issue. I'll have to look into that more. I'm hoping Holley/Bosch has something for me. Most other pumps sold in kits are EFI http://www.turboescort.com/070%20EFI%20Pump.htm for example which may work but that return lines gonna be BUSY! lol. If you're liking the GT adaptor plate idea Doc then so am I.

  17. #37
    Maybe something like this perhaps.https://www.holley.com/products/fuel...mps/parts/105P buying new name brand stuff really isn't the 'budget' way of doing things, but from the little I know good fuel supply to blown motors is essential.

  18. #38
    Join Date
    Mar 2007
    Location
    middle northern Melbourne
    Posts
    2,557
    I've never played with carbed turbo stuff, not many people have, so everything I say must be taken with a few grains of salt.

    I'd look at small external EFI pump's before brand name stuff. I'll have a hunt around for something, pretty sure I have an old non-turbo Nissan one that should be up to the task of supplying. Fuel supply important for sure.
    www.cortina-mk1.com
    Contact me for parts.

  19. #39
    Yeah I like to be left-of-centre. If you think you have something in the parts pile that would work I'd be interested. Trying to stick to the 'budget' part lol. Nearly picked up a free second hand turbo tonight, but then at the last moment I didn't because the guy wanted me to get the RIGHT turbo, not just what's available (and this one was stuffed!).

  20. #40
    Would the standard 9:1 compression ratio be too high to run 7-10 psi boost?

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