05:30:47am, Saturday, April 20, 2024
DT466 pistons
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Anonymous User
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I was told that the new pistons for the dt466 has a higher top compression ring. Is this true? If it is true,is there any where to buy old style pistons new? Thanks! |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
It is true. eBay, somebody from California sells them new 12 at a time once in a while.I bought some a while back. Just pistons no pins. |
Re: DT466 pistons
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Anonymous User
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I found a set with part # 684255c2. Would this be the low ring piston? |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
684255-c2 are the old style pistons with the lower ring grove. |
Re: DT466 pistons
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fred r
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what would be the advandage to the lower ring groove? If you were to build a 466 wich would be better 436 pistons cut down or the 466 pistons? and what would be the best turbo to run with either setup at 3000rpm? |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
The lower ring grove allows the top to be cut off and valve reliefs to be cut in for extra lift on a reground camshaft. Total combination makes the difference. In limited rpm and open rpm in my experience stock compression ratio with a small turbo worked better. The reason for using the pistons are to compensate for lost compression ratio when cutting the deeper valve reliefs. If you can run open rpms and a bigger than 3lm size turbo the compression needs to be less.
With a dt466 crank use the 436 pistons. With a 3/8" stroke on a dt466 crank use the 466 pistons. We ran a Hyper Max turbo. They can tell you the best one for your application. It ran for year trouble free. |
Re: DT466 pistons
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need to know
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Hey floyd will a 466 crank stroked 3/8 swing in there with a stock bore? And then your saying use the 466 low ring piston and cut the top off 3/8 also? |
Re: DT466 pistons
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If you stroke it 3/8" you only need to cut 3/16" off the pistons. |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
The only clearance problem I had was the block had to be ground for rod clearance and like previous post said. On a stroke you only gain half the increase on each side of the crank. piston goes up half and down the other half on strokes with same size journal. |
Re: DT466 pistons
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fred r
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who would you get to stroke the crank? |
Re: DT466 pistons
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fred r
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do you have the number for the 436 pistons to use that have the lower ring grove? Thanks. |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
Any good machine shop close to you should be able to do the job for you. save a lot of shipping cost. I don't have that number handy but if you call 1800-377-1297 tell them what pistons you are looking for (old style) they will get the number you need. |
Re: DT466 pistons
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hey floyd
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Hey floyd, did you ever run a 466 stroked 3/8 ? Just wondering what kind of clearance issues you ran into with the stock bore and cutting off the tops of the pistons |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
yes. still run it. just had to grind the side of the block inside to clear rods and bought old style pistons.cut the pistons and ran it. |
Re: DT466 pistons
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hey floyd
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And how good did it run then? |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
engine runs great. I added a bigger turbo and just working on dialing it in. |
Re: DT466 pistons
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fred r
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was it big enough increase in power to compensate the cost of stoking the crank. |
Re: DT466 pistons
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Registered: 11/04/2008 Posts: 270 |
crank was $1500.00 still had to cut the pistons either way. Still working out the bugs. big stroke in low rpms. big bore in high rpms , taking into consideration head flow rate and turbo size. |
Re: DT466 pistons
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Registered: 10/03/2016 Posts: 42 |
whats the differents if you run 407 rods and cut the top off of the piston? |
Re: DT466 pistons
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Registered: 10/03/2016 Posts: 42 |
If you run a 436 piston on a 466 rod and take .25 off the top will it last or burn out? |
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