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Discussion Starter #1
I had a great day driving at Lime Rock a week and half ago, but it became clear that I need more horsepower. Not on the straight, where I was getting killed by the Porsche Turbos and Mustangs (now that hurt), because frankly I was there for the curves. But for those of you familiar with the track, the downhill into the West Bend, I either needed to stay in third with the revs cranked way up, or accept that fact that fourth just didn't have the torque to power out of the apex properly. Staying that high in the rev range is hard on the drive train, so I'm really starting to think about boosting power.

Thoughts?
 

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A new motor from Lotus? $8000! But if you want one built with 50 more horsepower and all forged bulletproof internals you can get that for $5000 from Monkeywrench or many other 2zz specialists.

When you need more power you can bolt on one of many superchargers that will bump the stock motor from 160 whp to 215 whp. That will put you at the very respectable 13.00 quarter mile time.

When that is not enough you can toss another $5000 at the motor for a full forged internal build with low compression and high flow heads to put 300 whp down. At this point you will smoke a new ZO6 off the line. Or you can get a little more spendy with a Turbo kit and make 400 +.
 

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Discussion Starter #4
What RPMs are you seeing in 4th? Since you are saying you can be high in 3rd, I'm assuming around 5500-6000?

Perhaps the Lotus Sport ECU or any NA ECU tune which lowers the cam change is your best bet. The problem seems to be that you're not in the cam in 4th gear.
Definitely not on the cam in 4th at that point at Lime Rock, since you've got to brake for the downhill series of turns. So the choice is to stay in 3rd, or come out begging for power at low-mid revs in 4th. That's the point where I wish I had the torque.
 

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Discussion Starter #5
A new motor from Lotus? $8000! But if you want one built with 50 more horsepower and all forged bulletproof internals you can get that for $5000 from Monkeywrench or many other 2zz specialists.

When you need more power you can bolt on one of many superchargers that will bump the stock motor from 160 whp to 215 whp. That will put you at the very respectable 13.00 quarter mile time.

When that is not enough you can toss another $5000 at the motor for a full forged internal build with low compression and high flow heads to put 300 whp down. At this point you will smoke a new ZO6 off the line. Or you can get a little more spendy with a Turbo kit and make 400 +.
Hey, I like the tips. I hadn't thought about swapping out the engine.
 

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Definitely not on the cam in 4th at that point at Lime Rock, since you've got to brake for the downhill series of turns. So the choice is to stay in 3rd, or come out begging for power at low-mid revs in 4th. That's the point where I wish I had the torque.
I'm in 4th in the last corner before the straight, can't stay in 3rd there because I hit rev limiter when I'm still in the turn and I really don't want to shift from 3rd-->4th then.
Easiest&cheapest solution: install supercharger, then you can be in 4th and still have enough torque.
 

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I have the BWR and I'm in fourth through West Bend.
It still sucks being passed by the high HP cars, but I have only been tracking for a little under a year (less with the Elise) and I hope one day I can at least keep up with them.
 

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I had a great day driving at Lime Rock a week and half ago, but it became clear that I need more horsepower. Not on the straight, where I was getting killed by the Porsche Turbos and Mustangs (now that hurt), because frankly I was there for the curves. But for those of you familiar with the track, the downhill into the West Bend, I either needed to stay in third with the revs cranked way up, or accept that fact that fourth just didn't have the torque to power out of the apex properly. Staying that high in the rev range is hard on the drive train, so I'm really starting to think about boosting power.

Thoughts?
Buy a Caterham 1400 Hayabusa and get some driving lessons (0-60 2.96 seconds)

As it happens I have one for sale, 155mph on the main straight at Mission race way.

Caterham Hayabusa
 
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