Home › Forums › TKO Motorsports, LLC › Tko street track car build engine dyno day
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8.0 liter now.
We have had alot better luck with de-stroked motors for serious track and street use and abuse. -
Well done ! Thanks for sharing !!!
Kevin at Exotic Engines have taken a similar approach -
Kevin from exotic engines is right down the street from us. Real convenient and one of the best motor builders out there. This motor is one of his.
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TKO MOTORSPORTS TEAM said:
Kevin from exotic engines is right down the street from us. Real convenient and one of the best motor builders out there. This motor is one of his.Any other info you’re willing to share with us?
de-stroked 8.0 liters…. solid lifters… what else? What about the valvetrain? Titanium valves and/or rods?
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Aevus said:
Any other info you're willing to share with us?de-stroked 8.0 liters…. solid lifters… what else? What about the valvetrain? Titanium valves and/or rods?
No secrets really in the hard parts just top quality stuff and no short cuts. Kevin from exotic engines just has alot of experience and has the details all figured out. This motor is a race proven combo he builds that they have run in a trophy truck for many seasons. If it survives a trophy trucks abuse it will be just fine for road racing.
Not sure on the valves i will have to check -
TKO MOTORSPORTS TEAM said:
No secrets really in the hard parts just top quality stuff and no short cuts. Kevin from exotic engines just has alot of experience and has the details all figured out. This motor is a race proven combo he builds that they have run in a trophy truck for many seasons. If it survives a trophy trucks abuse it will be just fine for road racing.
Not sure on the valves i will have to checkYes I understand, I was just curious about that comment: On track rev limiter will be set conservatively @7800rpm (880hp) because de-stroked from 8.4 to 8.0 is not that much of a de-stroke (stroke reduced by 3mm or so), and yet you can ”conservatively” get to 7800rpm, which is quite impressive.
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Aevus said:
Yes I understand, I was just curious about that comment: On track rev limiter will be set conservatively @7800rpm (880hp) because de-stroked from 8.4 to 8.0 is not that much of a de-stroke (stroke reduced by 3mm or so), and yet you can ''conservatively'' get to 7800rpm, which is quite impressive.Over 40lbs off rotating assembly and no hydraulic lifters are the 2 bigs ones that help alot. Motor will rev 8k and some change still making a bit of power but its not worth it for a fun street/track car to twist it that hard.
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pMak26 said:
The want is real. I'd love to see the dyno graph going to full rpm. How much more is this over a 9L build?Sorry no dyno pull to 8K unfortunately. Guesstimate is 890 maybe 900hp. The factory manifold really starts to kill HP when you get above 7k RPM. This car will eventually get ITB then 900HP shouldn’t be a problem. 9L vs 8L 9l has the potential for more HP simply because of size; But the 8L offers better throttle response, and better usable HP for a track car. The biggest problem we have found with 9L is longevity if your really using it.
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TKO MOTORSPORTS TEAM said:
Kevin from exotic engines is right down the street from us. Real convenient and one of the best motor builders out there. This motor is one of his.That makes a lot of sense now…..lol !
He is a wealth of knowledge and Top Tier in his approach . -
TKO MOTORSPORTS TEAM said:
Sorry no dyno pull to 8K unfortunately. Guesstimate is 890 maybe 900hp. The factory manifold really starts to kill HP when you get above 7k RPM. This car will eventually get ITB then 900HP shouldn't be a problem. 9L vs 8L 9l has the potential for more HP simply because of size; But the 8L offers better throttle response, and better usable HP for a track car. The biggest problem we have found with 9L is longevity if your really using it.Really nice to see naturally aspirated projects like this. Nothing against massive HP turbo projects but it’s kinda refreshing to know N/A are still alive..
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Aevus said:
Really nice to see naturally aspirated projects like this. Nothing against massive HP turbo projects but it's kinda refreshing to know N/A are still alive..800hp is plenty to go fast and have fun. 800 is already over powering chassis a bit so you have to have a good foundation and money setups. NA helps all around, simplicity, longevity, responsive, less driver fatigue, more track time; You add it all up and the final result is lower lap times and more fun.
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Kevin is the best. I’ve been using him for 20 years.
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Dan Cragin said:
Kevin is the best. I've been using him for 20 years.Definitely….. Kevin is a good dude and easy to work with. We have only worked with him directly past few years. We didnt know it until we started talking but be we competed against the nissan team, TRD and other teams back 30 yrs ago in IMSA and WSC when Kevin worked on the motor programs and crewed.
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TKO MOTORSPORTS TEAM said:
800hp is plenty to go fast and have fun. 800 is already over powering chassis a bit100% agree.
I think 500hp is already over powering a stock gen 3, especially with the massive torque it delivers… Gen 5 chassis/suspension/traction control sure is better but still…
800hp or 700-ish whp is indeed excellent on a RWD 3,400lbs car, and still keeps up with modern sports/supercar standards which are getting heavier and heavier
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Aevus said:
100% agree.I think 500hp is already over powering a stock gen 3, especially with the massive torque it delivers… Gen 5 chassis/suspension/traction control sure is better but still…
800hp or 700-ish whp is indeed excellent on a RWD 3,400lbs car, and still keeps up with modern sports/supercar standards which are getting heavier and heavier
Lower HP car that’s properly, designed and engineered will almost always out perform 1000hp + road course car that’s poorly designed and engineered. Its what we call ” efficiency of setup”. A 500HP gen 3-4 viper would be a great base car to work with and develop.
The holy grail of course is to have your cake and eat to; efficiency of set up with 1:2 or better power to weight ratio. So far only a few heavy hitter motorsports/car mfg’s have gotten close with some pretty extreme outlaw projects. -
A 500HP gen 3-4 viper would be a great base car to work with and develop.
Well, I installed almost all TKO’s parts that fit my gen 3 😉
In few weeks, I’ll get installed my Penske double + Hyperco stiffer springs and your ” REAR LOWER SHOCK MOUNT WITH SPHERICAL BEARING ” hope that combo will be fun to drive!
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Aevus said:
Well, I installed almost all TKO's parts that fit my gen 3 😉In few weeks, I'll get installed my Penske double + Hyperco stiffer springs and your '' REAR LOWER SHOCK MOUNT WITH SPHERICAL BEARING '' hope that combo will be fun to drive!
Thank you for purchasing what we design, engineer, build and race. You will feel a very noticeable difference in how the car works which should give you more confidence. Your a TKO customer so if you have any questions on setup or tuning please feel free. You have access to our setup and track data, you can talk with our race engineers and mechanics also
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[video]https://tkomotorsports.com/tko-motorsports-news/engine-dyno-day[/video]
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