Tapered Ring Compressors

Tapered Ring Compressors

Author
Discussion

m4tti

Original Poster:

5,427 posts

155 months

Friday 30th May 2014
quotequote all
The alternative is a fixed. Summit say they do a 3.780 inch (but the pic is showing a 3.77 which may be a cock up with their images. Thats 96.012mm.

Will 12 hundreth's of a mil show up when dropping them in.

http://www.summitracing.com/search/part-type/pisto...

Summit seem to have the most reasonable shipping rates

226bhp

10,203 posts

128 months

Friday 30th May 2014
quotequote all
DVandrews said:
226bhp said:
DVandrews said:
The inverse chamfer is just a small shaped lip on the inside of the bore of the compressor that is the exact reverse shape of the chamfer and locates into the chamfer, this locks the device and offers a smooth transition from compressor to bore such that the rails in the oil control ring cannot expand into the chamfer area when the piston is fitted.

Dave
Thanks.

That's about as clear as mud.
Well pardon me all the way to hell for taking the time to explain.

Do you know what a chamfer is?

It's usually a small 45 degree cut across a 90 degree edge.

A reverse chamfer is the opposite, a small raised lip on a 90 degree edge that is the opposite form of the chamfer. It doesn't take a huge leap of imagination to conjure the image in your mind.

Mud or no, I can't put it any plainer than that.

Dave
I have no idea what you are talking about. It's easy for you because you have one in front of you so you can just invent bizarre terms such as inverse and reverse chamfer.
That's why pictures were invented, because they paint a thousand words....

226bhp

10,203 posts

128 months

Friday 30th May 2014
quotequote all
Pic: https://www.pegasusautoracing.com/bigpicture.asp?R...

What that has to do with a chamfer is beyond me. It's a groove in the end, the material left on is presumably the clearance between the piston and the bore.

DVandrews

1,317 posts

283 months

Friday 30th May 2014
quotequote all
Christ on a bike...

If your intention is to learn something, try reading the words, it really helps.

Did I draw any connection between those tricky to understand words 'reverse chamfer' and the device linked to?

I think you are a troll. In the interests of keeping the thread in topic, I will no longer be feeding the trolls.

Dave

G600

1,479 posts

187 months

Friday 30th May 2014
quotequote all
226bhp said:
DVandrews said:
The inverse chamfer is just a small shaped lip on the inside of the bore of the compressor that is the exact reverse shape of the chamfer and locates into the chamfer, this locks the device and offers a smooth transition from compressor to bore such that the rails in the oil control ring cannot expand into the chamfer area when the piston is fitted.

Dave
Thanks.

That's about as clear as mud.
Sounds pretty clear to me.

Zombie

1,587 posts

195 months

Monday 2nd June 2014
quotequote all
m4tti said:
The alternative is a fixed. Summit say they do a 3.780 inch (but the pic is showing a 3.77 which may be a cock up with their images. Thats 96.012mm.

Will 12 hundreth's of a mil show up when dropping them in.

http://www.summitracing.com/search/part-type/pisto...

Summit seem to have the most reasonable shipping rates
I've got a 93.0mm ARP which I use to fit pistons into a 92.8 - 98.9 bore. I've not had any issues with it. Last time the pistons were fitted with total seal rings too.

m4tti

Original Poster:

5,427 posts

155 months

Tuesday 3rd June 2014
quotequote all
Zombie said:
I've got a 93.0mm ARP which I use to fit pistons into a 92.8 - 98.9 bore. I've not had any issues with it. Last time the pistons were fitted with total seal rings too.
Was that a typo. Should 98.9 be 92.9.

Shame arp don't do a 96mm compressor.

Zombie

1,587 posts

195 months

Wednesday 4th June 2014
quotequote all
Sorry, yeah, that was a typo.

Bore size varies on the engines I build between 92.8 and 92.9.

The 93.0 ARP tapered ring compressor works perfectly, far better than anything else we've got.

m4tti

Original Poster:

5,427 posts

155 months

Friday 6th June 2014
quotequote all
Mission accomplished. After phoning around the states and being informed that the Wiseco 96mm compressor was on back order till the end of July I largely gave up.

I found Cosworth supply the same type of compressor, but I had no reply mailing there sales team. I phoned a place listed as a Cosworth Distributor, although he had no cosworth compressors he did have this smile Company was www.part-box.com


226bhp

10,203 posts

128 months

Friday 6th June 2014
quotequote all
m4tti said:
Mission accomplished. After phoning around the states and being informed that the Wiseco 96mm compressor was on back order till the end of July I largely gave up.

I found Cosworth supply the same type of compressor, but I had no reply mailing there sales team. I phoned a place listed as a Cosworth Distributor, although he had no cosworth compressors he did have this smile Company was www.part-box.com

Result. smile

Can you get a pic of the other end so I can see the detail please?

Zombie

1,587 posts

195 months

Friday 6th June 2014
quotequote all
m4tti said:
Mission accomplished. After phoning around the states and being informed that the Wiseco 96mm compressor was on back order till the end of July I largely gave up.

I found Cosworth supply the same type of compressor, but I had no reply mailing there sales team. I phoned a place listed as a Cosworth Distributor, although he had no cosworth compressors he did have this smile Company was www.part-box.com

Glad you got it sorted. They are worth the money. I am curious though, 96mm is a hefty bore size, what are you building?

Zombie

1,587 posts

195 months

Friday 6th June 2014
quotequote all
226bhp said:
Result. smile

Can you get a pic of the other end so I can see the detail please?
Why? It's very simple and has been explained to you in fairly robust detail.

m4tti

Original Poster:

5,427 posts

155 months

Saturday 7th June 2014
quotequote all
Zombie said:
Glad you got it sorted. They are worth the money. I am curious though, 96mm is a hefty bore size, what are you building?
Tvr speed six biggrin

Will try and get some end pics up tomorrow.

Zombie

1,587 posts

195 months

Saturday 7th June 2014
quotequote all
m4tti said:
Tvr speed six biggrin

Will try and get some end pics up tomorrow.
Nice! Please do!

226bhp

10,203 posts

128 months

Saturday 7th June 2014
quotequote all
Zombie said:
226bhp said:
Result. smile

Can you get a pic of the other end so I can see the detail please?
Why? It's very simple and has been explained to you in fairly robust detail.

Zombie

1,587 posts

195 months

Sunday 8th June 2014
quotequote all
Did you pull that out of the ladybird book of insults? You could try using your own words. Oh that's right, pictures are your thing aren't they?

m4tti

Original Poster:

5,427 posts

155 months

Wednesday 11th June 2014
quotequote all
226bhp said:
Result. smile

Can you get a pic of the other end so I can see the detail please?
Heres the top looking down..



Heres the bottom that will mate with the bore..




And heres a side profile looking at the bottom face again



Hope that helps.

oakdale

1,789 posts

202 months

Wednesday 11th June 2014
quotequote all
m4tti said:
226bhp said:
Result. smile

Can you get a pic of the other end so I can see the detail please?
Heres the top looking down..



Heres the bottom that will mate with the bore..




And heres a side profile looking at the bottom face again



Hope that helps.
I must admit, like 226bhp I've been a little confused by some of the terms used to describe these.

Looking at the pictures it's just a metal sleeve with an internal taper, is that correct?

honestbob

316 posts

234 months

Thursday 12th June 2014
quotequote all
Please will someone who actually knows what is required post a simple cross sectional sketch of the component
showing clearly where this elusive chamfer is. All I can see from the photos is what appears to be a 1/32"
x 45deg. chamfer on the outside edge of the smaller tapered end of the sleeve.

226bhp

10,203 posts

128 months

Thursday 12th June 2014
quotequote all
Zombie said:
Did you pull that out of the ladybird book of insults? You could try using your own words. Oh that's right, pictures are your thing aren't they?
How ungrateful, I designed that just for you, maybe you should go back to making a mess of our roads?
This thread shows the true value of pictures, you would never make something like this without a pic or a drawing.