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Author Topic:   Turtles?
Kromulous
Dirt Forum Champ
Total posts: 796
posted May 05, 2005 10:58 AM  
What is it and what do they do?

wfoondirt
Dirt Forum Champ
Total posts: 505
posted May 05, 2005 11:19 AM  
They go in the bottom on the intake directly under the plenum. Supposed to improve airflow/atomization. Most newer intakes like the brodix hv's have something similar cast into them.
http://brodix.com/Turtles.html

zeroracing
Dirt Forum Champ
Total posts: 1876
posted May 05, 2005 11:28 AM  
I have one his name is thomas, eats about anything you put near him....

zeroracing
Dirt Forum Champ
Total posts: 1876
posted May 05, 2005 11:33 AM  
I looked at them on that link. anybody got osme dyno numbers? I mean what are the acutal average power gains?

leapinlizard
Dirt Freak

Total posts: 402
posted May 05, 2005 11:52 AM  
It's all in a combo. There nothing new. I think brodix still uses them on a regular occasion. The idea behind them is to lenghten the runners of the intake to produce more torque at peak. without sacrificing the port cross section. Drag cars use them quite often. So does marine applications were the RPM at peak is near constant rather than up and down like a circle engine.

PS. I've got a Bearded Dragon that looks like a turtle with out a shell. He doesn't have any ideas about making torque though. He's moe into sun lamps and stuff.

Kromulous
Dirt Forum Champ
Total posts: 796
posted May 06, 2005 07:29 AM  
Anybody got any dyno numbers or any real world expierence with one?

They sound interesting.

The other item i am looking into is them HVH super sucker carb spacers. Everyone states that the up the HP by about 30 to 50 bolt on, anyone run one of these as well?

wfoondirt
Dirt Forum Champ
Total posts: 505
posted May 06, 2005 08:12 AM  
30-50hp is pretty optimistic. We run one on our l/m and it seems to help even out the flow to each cylinder as the egt's are alot closer with it on. Driver also said that it seemed to smooth the motor out some. No direct dyno comparisons sorry.

zeroracing
Dirt Forum Champ
Total posts: 1876
posted May 06, 2005 08:44 AM  
what is the price tag on one?

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted May 06, 2005 08:53 AM  
We run the super suckers. How well tuned your engine is to start with will make a difference on how much the spacer helps. IF you go from no spacer at all to a 1" spacer you might see a good jump just because the engine needed a spacer to start with, but going from a 1" spacer to a 1" super sucker you might not see the jump.

On the dyno we switched from a 1" open to 1" super sucker and saw a good 5-8hp and close to 10# torque gain, only difference being the spacer. It also smooths the airflow under the carb which increased the vaccum signal which in turn pulled more fuel into the engine richening it up a little as well.

If you buy the actual super sucker by HVH they are like 100$ for 1" and 125$ for 2" (lightweight add about 10-15$ea ). Plastic ones are cheaper but Id reccomend the aluminum, the plastic tends to crack.

[This message has been edited by dirtbuster (edited May 06, 2005).]

zeroracing
Dirt Forum Champ
Total posts: 1876
posted May 06, 2005 08:57 AM  
what kind of power increase over no spacer would be expected?

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted May 06, 2005 09:01 AM  
I dont know but like any spacer I cant imagine big gains. Maybe 10-15HP just a guess though

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