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Old 12-09-2011, 03:45 PM   #16
Vinny V
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Default Re: Rottler HP6A or Sunnen SV-10

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Originally Posted by Chris Uratchko View Post
I like diamonds... All my stuff has been diamond for the last couple years.
Works great on composite blocks ,Drce etc.
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Old 12-14-2011, 12:19 AM   #17
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Default Re: Rottler HP6A or Sunnen SV-10

Look closely at the two machines and their tooling. The R is a low end entry level machine, has a garage door spring in the back for help on head return. The S is the high end "Pro" machine.
The R hone head requres you to flip the diamond stones end to end to control taper. The S hone head uses the proven centering cone type wedge design that pushes all the stones out at the same time equally, no reason to flip because they wear evenly - no taper. The S machine has twice the spindle power, it also has a touch screen that display's a real time bore cross section picture while honing.

Humble opinion

Last edited by FlashCadilac; 12-14-2011 at 12:20 AM.
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Old 12-14-2011, 03:37 AM   #18
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Default Re: Rottler HP6A or Sunnen SV-10

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Originally Posted by raymond daniels View Post
Need to be careful with diamonds on a thin bore block it is hard to get a round hole because of the pressure they take to cut
I've been suing the SV-10 at SAM to do my Viper blocks, which are aluminum blocks with thin sleeves in them. Easy to get eccentric bores from too much stone pressure on those blocks, like the old LS1 blocks. It gives me a perfectly round bore. I don't know how to use a CK-10, but the SV-10 is easy enough for a head porter like me to use.

Before I used the SV-10 I had a top level engine builder here in town (Houston) doing my Viper blocks. He used about half the pressure normally used on a cast iron block, along with softer stones (to prevent them from loading at the lower pressure). Worked awesome.

I wouldn't mind learning more about the pressure differences needed between the stones and diamonds if you're willing to talk about it. It's something that fascinates me. I always use the *finish* feature (less load) no matter how much stock I am removing.
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Old 12-14-2011, 08:52 AM   #19
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Default Re: Rottler HP6A or Sunnen SV-10

I would luv to get a new sv-10, but i just can't swing $40,000+++ right know
Anybody wanna get me one for christmas............
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Old 12-14-2011, 08:58 AM   #20
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Default Re: Rottler HP6A or Sunnen SV-10

Rich,maybe we can get a killer deal on 2.
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Old 12-14-2011, 09:15 AM   #21
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Default Re: Rottler HP6A or Sunnen SV-10

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Rich,maybe we can get a killer deal on 2.
Really don't think sunnen will give a shit if we buy 10............
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Old 12-14-2011, 10:44 AM   #22
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Default Re: Rottler HP6A or Sunnen SV-10

Greg G we have a new hp6a it is a very good machine on the bow tie and dart blocks that I hone I can make a very good round and straight hole but on the small block one piece seal production blocks they end up out of round I have called and talked to everyone I can think to to fix problem and have found no solution I am told and believe it is the nature of diamonds i have tried lowering pressure with little help I also attended Sam
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Old 12-14-2011, 11:57 AM   #23
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Default Re: Rottler HP6A or Sunnen SV-10

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Originally Posted by HS 3131 View Post
Which one is the preferred in the bizz? Both seem good.
I think S has been building this type of "Pro" style machine since 1964 in the CK-10 then the CV-616 and now the SV-10 which has a seperate spindle and stroker motor to power the diamond hone head. The S hone head uses a centered cone style wedge where all the stones are pushed out equally. This hone head makes for very round and straight bores. S also makes their own Diamond and CBN stones, they don't buy sticks from one mafg and glue them to their holders. Look closely at the design of the machines the; the entry level R has a garage door spring in the back to help the hone head come back up? The S is the choice for all of the "Pro's" for a reason.
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Old 12-14-2011, 12:57 PM   #24
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Default Re: Rottler HP6A or Sunnen SV-10

We had the SV-10 in our shop for a while (after the show here at HMS that was mentioned earlier), we were not real impressed with it compared to the 616's we use currently. And the diamond stones.........not so much either, but that's just us I guess, as some seem to really like them?
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Old 12-14-2011, 02:18 PM   #25
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Default Re: Rottler HP6A or Sunnen SV-10

I like my old CV-616 as well with std. abrasive stones. It takes a very skilled CV-616 operator with years of experiance to duplicate what the SV-10 with diamonds can do as far as roundness and straightness. Regardless of which way you go with a CV-616/std. tooling or the SV-10/diamond tooling you need to think about a job shop vs. a Cup shop. Most job shops do not have the expert quality staff that a Cup shop has nor do they have the time to devout to honing a block that the Cup shop does. They need to be able to do the job as quick as possible with a high quality job; that was the reason I purchased a SV-10/ DH hone head to replace my CV-616 and my two operators love it. We also looked at the HP6A at the PRI show last year - it is a low end machine but better than a old hand operated tank hone I am sure. My reputation depends on high quality work.
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Old 12-14-2011, 07:16 PM   #26
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Default Re: Rottler HP6A or Sunnen SV-10

I'll let you know. New SV-10 just showed up yesterday.

Still kinda half sold on the diamonds though - I've been "challenging" the Sunnen rep on the output.

I've always been a fan of traditional stones. The main advantages of diamond are always said to be speed and cost over the long run - neither of which mean crap to me. I am more concerned with finish quality and topology. I'm gonna be a tough sell...



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Old 12-14-2011, 08:12 PM   #27
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Default Re: Rottler HP6A or Sunnen SV-10

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Originally Posted by Barry_R View Post
I'll let you know. New SV-10 just showed up yesterday.

Still kinda half sold on the diamonds though - I've been "challenging" the Sunnen rep on the output.

I've always been a fan of traditional stones. The main advantages of diamond are always said to be speed and cost over the long run - neither of which mean crap to me. I am more concerned with finish quality and topology. I'm gonna be a tough sell...



Barry, Spend 2 days down at the sunnen lab. Only do it if, Tim Meara is in their at the sametime you are there.



I have used the diamonds for ruffing since 2003. I don't use them for finishing.
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Old 12-14-2011, 08:14 PM   #28
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Default Re: Rottler HP6A or Sunnen SV-10

Tim Meara is a long time good friend. He was my initial call on the purchase.
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Old 12-14-2011, 08:18 PM   #29
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Default Re: Rottler HP6A or Sunnen SV-10

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Tim Meara is a long time good friend. He was my initial call on the purchase.
Tim's word is gold with me.
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Old 12-14-2011, 09:31 PM   #30
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Default Re: Rottler HP6A or Sunnen SV-10

Do as Tim Meara says and you will be spot on. With 25 years of honing experiance it is hard to argue with Tim's knowledge. For the un-educated Tim Meara the R&D guru at Sunnen has developed most every honing process known to man in this country! His honing recipe was winning races before all the other brands of honing machines were ever born.
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