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Thread: The time has come, Tinks L61/TVS engine build. Stage 1. Collecting parts.

  1. Top | #13
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    I hope to either have the short block or head done by spring, but it probably wont go into the car until next winter. And that only is if my vert isnt ready for a heat transplant.

    L61/TVS - 3.1", LS1 tb, RD Fabs header, 63#, HPT

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    Tell me more about that crank, I didn't think they were still available. are you going to need to get the notch machined out for the crank sensor or is it there?
    http://i11.photobucket.com/albums/a174/Cinpro/jokercopy2.jpg

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    As far as i know it is a direct drop in. I picked it up off of PJ last year, i guess he bought it brand new a bunch of years ago and never used it.

    Edit(Per PJ):
    Reluctor is already there. And they are no longer made
    Last edited by Tinkles; 08-09-2013 at 02:18 AM.

    L61/TVS - 3.1", LS1 tb, RD Fabs header, 63#, HPT

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    You can find the cranks randomly on ebay.

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    Out of curiosity, why did you decide to go with 10:1 pistons and not a dished, lower CR piston?

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    No reason to lower cr on a supercharged car.

  7. Top | #19
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    Out of curiosity, why did you decide to go with 10:1 pistons and not a dished, lower CR piston?
    Sparkey
    More out of boost power, better in boost power, and i am not worried about tuning. The short of it is that lower CR pistons are a band-aid for iffy tuning. Boost loves higher compression.

    L61/TVS - 3.1", LS1 tb, RD Fabs header, 63#, HPT

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    An old timer that I work with has told me that 10:1 is a little on the high end for a blower. He was telling me that a dished piston down to ~9:1 would yield better in boost power at the expense of some out of boost power. He has said that the extra mixture volume, in addition to being more raw volume as slight as it is, helped fight knock and allowed for more aggressive timing. Thoughts?

  9. Top | #21
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    That old timer may have been referring to an old timer motor, lol...

    The eco (all variations) seem to respond well to higher comp with a blower. The lower comp motors do seem to respond better to the more aggressive timing (for instance the LSJ looooves timing up top), but I think the higher comp and TVS will be a winning combo. I plan on tossing either 10:1, maybe 10.5:1 in my LSJ when I rebuild over the winter

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    The difference in the dish of the Wiseco 10:1 and 8.9:1 pistons is only 8cc. I'll have to do more research on the topic, but i think that the higher CR will provide the better gain.

    L61/TVS - 3.1", LS1 tb, RD Fabs header, 63#, HPT

  11. Top | #23
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    Well after a year of off and on research and procrastinating. I finally ordered a set of 10:1 Wisecos yesterday. I was looking at a set of 9.5:1 Diamonds, but the thought of losing some of the "spunk" the car has with the stock 10:1s did not sit well with me. Ultimately that was the deciding factor as to why 10:1. There is a 99% chance I'll run a direct port water/meth set-up on the engine. I also ordered a set of +1mm Ferrea Exhaust valves a few months ago and should be ordering the matching +1mm intakes shortly. Besides the machine work the only other "pricy" item left is a set of Power Bore sleeves.

    L61/TVS - 3.1", LS1 tb, RD Fabs header, 63#, HPT

  12. Top | #24
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    Power bore sleeves? Are those Belvederes sleeves off CSS? If not you may want to get ahold of him.

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