Mandrel Rod
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 Sunnen Rod King Pin Hone Mandrel 4PL 1094 $150.00 Time Remaining: 28d 4h 30m Buy It Now for only: $150.00 |
 Sunnen CR1900 Rod Mandrel $150.00 (1 Bid) Time Remaining: 5h 1m |
 Sunnen Connecting Rod Honing Mandrel CR 4300 $532.00 Time Remaining: 2d 6h 31m Buy It Now for only: $532.00 |
 Sunnen CR2100 Rod Mandrel $150.00 (1 Bid) Time Remaining: 5h 7m |
 Sunnen CR 1600 Y44 1625 Connecting Rod Keyway Hone Honing Mandrel $249.00 Time Remaining: 19d 23h 22m Buy It Now for only: $249.00 |
 Sunnen CR2700 Rod Mandrel $175.00 Time Remaining: 5h 20m |
 Sunnen CR 2100 Connecting Rod Hone Honing Mandrel $249.00 Time Remaining: 17d 1h 27m Buy It Now for only: $249.00 |
 Sunnen Rod King Pin Hone Mandrel 3PL 1125M $110.00 Time Remaining: 12d 5h 38m Buy It Now for only: $110.00 |
 Sunnen CR2300 Rod Mandrel $175.00 Time Remaining: 5h 13m |
 Sunnen CR 2300 Connecting Rod Hone Honing Mandrel $249.00 Time Remaining: 7d 4h 10m Buy It Now for only: $249.00 |
 Sunnen YY44 1500 Keyway Connecting Rod hone mandrel 1490 to 1625 range $192.50 (6 Bids) Time Remaining: 2d 11h 13m Buy It Now for only: $275.00 |
 Sunnen Rod King Pin Hone Mandrel 4PL 1094 $150.00 Time Remaining: 5h 10m Buy It Now for only: $150.00 |
 Sunnen CR2500 Rod Mandrel $175.00 Time Remaining: 5h 15m |
 Sunnen CR 2700 Connecting Rod Hone Honing Mandrel $249.00 Time Remaining: 11d 9h 1m Buy It Now for only: $249.00 |
Mandrel Rod
Increasing your cars performance by modding the exhaust.system
In the never ending quest for lower drag times a car tuner will often times start with removing the restrictive factory exhaust system and decreasing backpressure. A complete exhaust revamp can consist of anything from a header(s) to a cat-back exhaust system. Choosing which one is right for you is a task that must be undertaken with consideration to your local street laws.
Headers: The factory exhaust manifold is usually a bulky cast-iron unit that is designed to deliver low-end torque (provided by the small primaries). While this is desirable for daily-driving, it is not the ideal for performance. Many factors can affect a headers performance but generally the features you should be concerned with are:
- Primary Width - Wider the primaries the more peak torque (but later in the power band). There is a limit to how big is big enough that varies from engine to engine.
- 4-1 or 4-2-1 Design. A 4-1 design incorporates all 4 primaries intersecting into the collector whereas the 4-2-1 has the primaries split into twos and then into one. Different designs offer different power bands.
- Type of steel- No question here, what you want is SS for the highest quality and most corrosive resistant header(s).
Catalytic Converters
While usually pin pointed as the main restriction in an exhaust, nothing can be further from the truth, while true catalytic converters do restrict flow just like anything else in the pathway of the exhaust gases; they do not hinder flow anymore than the muffler. In fact most catalytic converters are less of a restriction than a muffler. I would always opt for a high flow catalytic converter in an emissions state. These have been proven to provide a negligible loss in horsepower while still keeping it road legal.
Exhaust Piping
Becuase of the budget/time that's put into both R&D and producing a factory auto, the exaust tubing is usually a ho hum choice. Just like the stock exhaust manifold, it suffers from too small diameter piping and crushed bends. When replacing the entire exhaust system always look for a mandrel bent system (small exhaust shops cannot offer this service) that is also stainless steel. The mandrel bends are somewhat more important than the overall size of the exhaust.
Picking the diameter is a fairly easy decision and should be followed by a general outline such as this:
- 2" Stock- Very Mildly Modified
- 2.25" Mildly Modified-Moderate (exhaust,header,cold air intake,tune)
- 2.5" Moderately Modified- Built N/A engine (exhaust, header, cold air intake, tune, pistons, rods)
- 3" Forced Induction - Turbo or SuperCharged
Mufflers
Look for a straight through design from a respected name. Magnaflow, Flowmaster, Walker, and Thrush are just a few of the better performance muffler outfits. Glasspack mufflers tend to be a good compromise of performance at a lower price.
About the Author
Can I use peices of stainless steel rod to make a bead on?
I'm wanting to start making my own beads after I have done work experience in a glass jewelery shop. I'm getting a bead making starter kit for Christmas, but i was looking for cheaper alternatives in everything basically. I was just wondering if i could use pieces of stainless steel rod as mandrels Rather than buying mandrels if you know what i mean? If you can help me i would appreciate it...
THANKS =)
Yes. There are two kinds of stainless steel - those that are heat conductive and those that are less so. You want the latter. The quickest way to test is to take a lighter with you while you are shopping and hold the rod about 2" from the end and heat the end. If it is conductive, your fingers will feel the heat in a few seconds. And of course you will use release.
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