I'm so confused, exhaust? heads? ignition? ahhhhh |
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I'm so confused, exhaust? heads? ignition? ahhhhh |
Hammy |
Sep 27 2005, 08:10 PM
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#1
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mr. Wonderful Group: Members Posts: 1,826 Joined: 20-October 04 From: Columbia, California Member No.: 2,978 Region Association: Northern California |
I'm going (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/wacko.gif)
Alright, so say I were to get a Raby 2056 kit, and put 40 or 44mm Webers on it... So then, what do I do about exhaust? I'm new to all this, so I don't understand the different types of exhaust. Headers? heat exchangers? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) So What would work well for a 2056? I need something inexpensive And for the heads. It says it comes with "Complete Super Stock remanufactured heads. 42x 36 valves oval exhaust ports, 96mm bore" , with the option to upgrade the heads to PORTED heads. Ok, so what's ported? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) And for the ignition. I don't know where to even start on this. I assume whatever ignition setup I have now isn't going to work. TIA. I'm trying to learn. |
Jake Raby |
Sep 27 2005, 09:30 PM
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#2
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Hammy,
Things like this is the entire reason people buy from me.. For support and a project that can be accomplished with zero trial and error and guesswork. The base engine the kit is derived from performed best with 44mm Webers with 32mm Venturis, 135 main jets, 200 air jets and 28degrees full advance and 12 degrees initial with a grey/grey curve. 40 webers can be used, with 34mm venturis but throttle response was lower and midrange power was as much as 5% lower, and efficiency dropped off. As for exhaust, a set of S/S heater boxes and a Bursch will work fine for the kit- this is no super tuned engine, although it will make 125 HP easily. Basically anything BUT the stock exhaust will work OK with this kit. As for the heads- Opt for the new castings with the port work, the efficiency of the engine is much better with them and the price is very favorable for a brand new pair of heads. remember: I'm the guy that can help you and the guy you are paying to do so.. Lean on me, not the guys here on the board for making these decisions! Here are a couple of power graphs from the 2056 base engines the kit was based from. The first one is with standard non ported heads and the second is with ported heads- note the differences across the board DO NOT LOOK AT ONLY PEAK HORSEPOWER!! You won't be using that unless you are constantly above 5252 RPM! Non ported combo (IMG:http://www.aircooledtechnology.com/type4/914/2056_daily.jpg) Ported combo (IMG:http://www.aircooledtechnology.com/type4/914/2056_daily_plus.jpg) The only difference between the two is a cam swap and the head swap.. Reliability, longevity and drivability are not compromised with the higher performance engine.. This is the same comboi that I just drove 1800+ miles with in my 912E and didn't even open the decklid to check the oil! I have been doing that with this engine for 86K miles, and only in 3 years! |
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