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| Hi-Comps ready to drop http://ducatipaso.org/forum/viewtopic.php?f=1&t=5135 |
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| Author: | jklnhyde [ Sun Oct 30, 2011 3:11 pm ] |
| Post subject: | Hi-Comps ready to drop |
I might drop the hi-comp pistons in the Paso as long as I don't have to battle too many variables along the way. I have the plastic all off to replace a dead fuel pump, so I might as well do somthing else while there. Besides replacing the timing belts and adjusting valve clearances, and head, valvetrain and base gaskets, what else should I budget for. Yes, budget; the CBX stopped firing and the Enfield stopped carbureting. I'm low on cash; I want the Ducati to be done fast and on the cheap. Hit me! Rick |
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| Author: | jklnhyde [ Sun Oct 30, 2011 6:38 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
Arrrgh!!!! The dissassembly went without a hitch, but, SURPRISE!!, I think the previous owner had already put hi-comp pistons in! The pistons I pulled out are identical to the hi-comps I ordered, and even have the same markings underneath: 09 3528. Can this be possible? Rick |
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| Author: | paso750 [ Sun Oct 30, 2011 6:54 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
what compression ratio are they ? The Paso 750 is already higher compressed (10:1) than ie a 750 Supersport or Monster (9:1). G. |
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| Author: | jklnhyde [ Sun Oct 30, 2011 7:57 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
Not sure of the compression, but the dome on the new hi-comp pistons is much bigger than on stock pistons I've seen. (Ebay has a couple of photos of stock and hi-comp pistons for comparison) At this point I'd love to bore out the cylinders and go with some 90mm pistons, but can't justify the expense, so I'm going to have to put it back together as is. What's a good place to get the gaskets and seals? |
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| Author: | jcslocum [ Mon Oct 31, 2011 10:25 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
Try Ducshop in Atlanta or maybe Ferracci in Philly. |
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| Author: | jklnhyde [ Tue Nov 01, 2011 2:55 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
Yeah, waiting on replies from one other source. So far three other sources have been no-go for the parts I need. As for the cam pulley tool, anywhere I can find it for less than the $80 most places want for it? Rick |
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| Author: | paso750 [ Tue Nov 01, 2011 4:27 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
maybe worth a try two on ebay http://www.ebay.com/itm/DUCATI-CAMBELT- ... 3cbd64cfd7 http://www.ebay.com/itm/DUCATI-BELT-LAY ... 20bdf77b88 G. |
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| Author: | Mc tool [ Tue Nov 01, 2011 10:30 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
| Author: | jcslocum [ Tue Nov 01, 2011 10:38 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
Call Commonwealth Ducati in Kentucky and ask for Aldrin. Tell him Jon from DESMO told you to call. I'm sure he can help you. |
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| Author: | jklnhyde [ Wed Nov 02, 2011 12:57 am ] |
| Post subject: | Re: Hi-Comps ready to drop |
Thanx for the tips, fellas'!! I'll report back... |
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| Author: | paso750 [ Mon Nov 07, 2011 9:49 am ] |
| Post subject: | Re: Hi-Comps ready to drop |
| Author: | paso750 [ Mon Nov 07, 2011 10:08 am ] |
| Post subject: | Re: Hi-Comps ready to drop |
I put mine away so I can´t measure them but here`re some HC piston that are also for the Paso. Maybe the measurements help you to identify. http://www.kaemna.de/cms_de/katalog.htm ... tikel=2572 G. |
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| Author: | jklnhyde [ Sat Nov 12, 2011 2:35 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
Well, I got a hold of the seller and explained to him the issue of Paso stock, high-comp pistons vs. aftermarket stock bore higher-comp pistons. He came back saying Paso's came with flat topped pistons as stock, with a 9:1 CR, and aftermarkets for it are domed with 10.5:1 CR. This is coming from a well known Guzzi/Ducati parts vendor/racer etc. Should I just live with no definate answer to this question? I buttoned up the engine already, but dont know how to archive the leftover pistons, stock or aftermarket...ha,ha! Rick |
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| Author: | paso750 [ Sat Nov 12, 2011 10:58 pm ] |
| Post subject: | Re: Hi-Comps ready to drop |
He`s wrong. Let him look at the parts catalogues or the specs of the F1, let him check what`s offered used http://www.ebay.de/itm/Ducati-F1-750-Bi ... 0868879995 http://www.ebay.com/itm/Ducati-88mm-Pis ... 3f0ff6e084 and have him google the part number: http://www.loudbikestore.com/067047400- ... 14099.html Aftermarket hi comp pistons are usually in the range of 10,8:1 - 12:1. G. |
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| Author: | paso750 [ Fri Nov 18, 2011 9:37 am ] |
| Post subject: | Re: Hi-Comps ready to drop |
Btw one of the Paso brochures shows an image of an open cut engine and you see the pistons there, too. |
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