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Old 05-18-2009, 06:06 AM   #1
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Default Need car to be a little more "Snappy"

Opening day at the track was a washout yesterday, but we ended up getting some practice time... I really need to get more punch out of my car to clear a few of the long jumps with not so much running room... I will give you my info and tell me what you think... RB WS7III with about 2/3 of a gallon through it. RB 2045 pipe with 92manifold. Tuning was a little iffy. The weather was about 55degrees and cloudy. I temped it and was at almost 280 at the very last drop of the tank, but good smoke still coming out. The engine is hesitating a little in the mid-range. Seems fine low and high but mid range has a slight hesitation...
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Old 05-18-2009, 06:12 AM   #2
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What's your clutch setup/clutch bell/spur/car?

First you need to get your tune right, you said you bottom felt good, and the problem is mid to high. Your temps are high so I'd say you're too lean on top. It'll hesitate/stutter when it's lean and it'll sound like it gurgling if it's too rich.
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Old 05-18-2009, 06:16 AM   #3
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ws7 needs to be matched with 98 header for more punch...
92 header would be better for c6.
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Old 05-18-2009, 06:25 AM   #4
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Also keep in mind cooler air is denser, so you engine is actually getting more air in the same volume. That could result in an over lean condition.
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Old 05-18-2009, 06:41 AM   #5
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My WS7T L2G did the same thing for a while, then it got way worse. I ended up finding a puddle of fuel under the engine mounts. Front bearing was pissing fuel. If the engine is getting hotter and hotter as the tank goes on, see if you can find a leak.

I had to replace the front bearing and get it back together. Still didn't work properly. I had it apart 2 more times, first time to apply sealant to all possible air leak sites. Still not happy. Second time, replaced rear bearing and all carb o-rings. Changed plugs twice and suddenly it just woke up. Now it screams.
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Old 05-18-2009, 06:46 AM   #6
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if you're bearings aren't leaking, I would go with the most simplest change. Go with harder clutch springs such as 1.1 and aluminum clutch shoes. You can also go a step heavier in your center diff oils. Also raise your anti squat to give you maximum traction during run ups.
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Old 05-18-2009, 06:50 AM   #7
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Your throttle finger can cause this also. You may be getting some wheel spin and losing speed. Try a slow roll into the throttle and see if it is any different.
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Old 05-18-2009, 06:55 AM   #8
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If all of the above remedies still dont get the job done..try a smaller Clutch bell..go down 1 or 2 teeth,..nobody wins any races with top speed anyway
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Old 05-18-2009, 07:00 AM   #9
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Quote:
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nobody wins any races with top speed anyway
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Old 05-18-2009, 07:03 AM   #10
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I have the Thudertiger 2035 (I think thats the number) with the long header. would this be a decent header to go with? The RB 198 seems to be impossible to come across
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Old 05-18-2009, 07:54 AM   #11
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Quote:
Originally Posted by mfrosty View Post
What's your clutch setup/clutch bell/spur/car?

First you need to get your tune right, you said you bottom felt good, and the problem is mid to high. Your temps are high so I'd say you're too lean on top. It'll hesitate/stutter when it's lean and it'll sound like it gurgling if it's too rich.
you need to answer this question first, from there you will be able to get some proper answers, engine and tune are but a part of your problem and for decent answers people will need the whole picture
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Old 05-18-2009, 08:30 AM   #12
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Ha ha I did post that in a reply, but apparently I didn't hit send... It's an XB8. Spur is 46t, clutch bell is 14t. Xray aluminum shoes (lightweight), and hard springs (1.1)
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Old 05-18-2009, 08:38 AM   #13
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Quote:
Originally Posted by piranha21 View Post
Ha ha I did post that in a reply, but apparently I didn't hit send... It's an XB8. Spur is 46t, clutch bell is 14t. Xray aluminum shoes (lightweight), and hard springs (1.1)
Light shoes AND 1.1's in a Buggy? That's a little hard for a buggy, bet you're getting a lot of wheelspin too. Get you're tune right first, drop to 1.0's, 14/46 should give you good acceleration. You're going to go through clutch shoes like nobody's business with that setup
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Old 05-18-2009, 08:47 AM   #14
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They are the Xray 1.71 shoes.
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Old 05-18-2009, 08:56 AM   #15
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Use a 13 tooth clutch bell and use a 48 spur. Thicken your diff oil.
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