@nigel My big bore cvh motor is linered according to Power Engineering who did the engine conversion work. It hasn't blown up yet although as I said earlier I was planning to replace it with a 2.0 zetec blacktop for easier power increases - may need to re-think that if blacktop piston availability is an ongoing issue.
@jimLOL your comments re engine reconditioners - there are certainly some dodgy ones. To be fair there are also some decent companies - I have been inside several - impressive machinery and skiled folks operating them. Of course s/h engine is always going to be the cheapest option but most are an unknown quantity - even if you get a short guarantee you can waste a lot of time installing only to discover it has problems and has to be pulled out again.... John On Friday, 26 March 2021 at 17:20:39 UTC Jim Hearne wrote: > Detonation will kill a turbo engine really quickly. > And running standard compression it’s going to detonate at anything above > a tiny level of boost. > What boost were you running ? > I assume it has a aftermarket ecu ?, does it have a knock sensor on it ? > > Not really heard of sleeving being used on a cast iron block but i guess > it’s possible. > The joint between the sleeve and the block may reduce it’s heat transfer > ability which is of course just what you don’t want. > > Jim > > > > > *From:* Nigel Plant > *Sent:* Friday, March 26, 2021 5:05 PM > *To:* [email protected] > *Subject:* Re: [Quantum Owners] 2L Zetec Blacktop Pistons > Silvertop oversize pistons are readily available. > I think mine failed due to about 20 track days approx 10 with turbo and > too much fuel at start up. I also ran with standard compression and there > was significant evidence of pre detonation particularly on the #3 piston > which failed. However I dont think it was significant enough to be the > cause. I dont yet have the piston, so haven't inspected it in detail. > I do have a second engine but that has worn bores. One option is to use > that but with the block sleeved so I can reuse those pistons. Does anyone > have experience of sleeving, I dont, so am hesitant to go that route. > > On Fri, 26 Mar 2021, 16:37 [email protected], < > [email protected]> wrote: > >> I was planning to drop a 2.0l blacktop and possibly turbo into my saloon. >> This piston availablity issue is making me think twice. Is it the same >> problem for the old silvertop? How many manufacturers are there for >> standard type pistons? Wondering how the engine reconditioning businesses >> source their pistons. >> >> John >> >> On Thursday, 25 March 2021 at 18:36:23 UTC [email protected] wrote: >> >>> Thanks Jim, will respond to your other later, some interesting points! >>> Oversize pistons for blacktop are quoted for on plenty of web sites, but >>> are never available. Supplier calls the manufacturer and they all come back >>> with same story. >>> Regards >>> >>> On Thu, 25 Mar 2021, 16:23 Jim Hearne, <[email protected]> wrote: >>> >>>> As you say, i don’t think Ford sells pistons for a Black top Zetec as a >>>> spare, they want you to replace the whole bottom end. >>>> The Zetec SE is the same. >>>> >>>> Jim >>>> >>>> >>>> *From:* susanandmartin >>>> *Sent:* Thursday, March 25, 2021 3:28 PM >>>> *To:* [email protected] >>>> *Subject:* RE: [Quantum Owners] 2L Zetec Blacktop Pistons >>>> >>>> >>>> Not that it helps with your quest, but (hopefully) of interest. >>>> >>>> When I was working at Ford we had an engine being tested for cold start >>>> durability at a University. As proof (if it was ever needed) that starting >>>> an engine repeatedly from cold with a fuel-enriched intake mixture would >>>> wreck an engine, there was a need for new pistons after several months and >>>> x000’s of start procedures. When trying to source new pistons, however, it >>>> was found they were not listed as a spare and could only be bought with an >>>> engine block. As this wouldn’t help our engine block durability testing, >>>> great discussions ensued taking several hours and it was agreed some >>>> pistons could be supplied direct from the assembly line (maybe one car was >>>> released without pistons? 😊). This is a good example of how Ford goes >>>> to great lengths with their testing (and probably other manufacturers do >>>> as >>>> well). >>>> >>>> Martin Scott >>>> >>>> >>>> >>>> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for >>>> Windows 10 >>>> >>>> >>>> >>>> *From: *Nigel Plant >>>> *Sent: *25 March 2021 12:15 >>>> *To: *Quantum Owners Group >>>> *Subject: *[Quantum Owners] 2L Zetec Blacktop Pistons >>>> >>>> >>>> >>>> Probably one that's right up Jim's street. Does anyone have the Ford >>>> specification for 2L Zetec blacktop pistons. Need gudgeon pin diameter, >>>> compression height essentially all the key dimensions. I have broken a >>>> piston on my Xtreme turbo such that it needs reboring and cannot get any >>>> standard but oversize pistons. Am also told that Nural and Mahle have no >>>> production plans to manufacture any. I can get forged pistons and rods, >>>> which would be better performance wise but didn't want to drop compression >>>> to 8:1 or fork out £1200. 9:1 is my ideal for the power I want. I have >>>> found a custom piston manufacture for forged pistons alone, but they >>>> require a piston (no problem) and the key specs. >>>> >>>> >>>> >>>> For information, I have learnt one interesting point that people may >>>> find useful. Although the silvertop and black top have different length >>>> conrods (ctr to ctr) and different compression heights. The combined >>>> total >>>> of conrod length and compression height for the silvertop and blacktop are >>>> the same, meaning a set of silvertop conrods and pistons can be used to >>>> replace the blacktop ones. >>>> >>>> >>>> >>>> Thanks for any help on the specs. >>>> >>>> >>>> >>>> Nigel Plant >>>> >>>> -- >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Quantum Owners Group" group. >>>> To post to this group, send email to [email protected] >>>> To unsubscribe from this group, send email to >>>> [email protected] >>>> For more options, visit this group at >>>> http://groups.google.com/group/quantumowners?hl=en >>>> >>>> IMPORTANT NOTE: All information presented herewith is provided on an >>>> "As Is" basis, without warranty or the implication thereof. Neither the >>>> Quantum Owners Club nor the individuals associated with the Quantum Owners >>>> Club or in the preparation of the above information shall have any >>>> liability to any person or entity with respect to liability, loss, or >>>> damage caused or alleged to be caused directly or indirectly by the >>>> instructions contained within this or related message(s). >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Quantum Owners Group" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/quantumowners/f7746385-3a1a-4d8c-b901-f6b726a67128n%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/quantumowners/f7746385-3a1a-4d8c-b901-f6b726a67128n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>>> >>>> -- >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Quantum Owners Group" group. >>>> To post to this group, send email to [email protected] >>>> To unsubscribe from this group, send email to >>>> [email protected] >>>> For more options, visit this group at >>>> http://groups.google.com/group/quantumowners?hl=en >>>> >>>> IMPORTANT NOTE: All information presented herewith is provided on an >>>> "As Is" basis, without warranty or the implication thereof. Neither the >>>> Quantum Owners Club nor the individuals associated with the Quantum Owners >>>> Club or in the preparation of the above information shall have any >>>> liability to any person or entity with respect to liability, loss, or >>>> damage caused or alleged to be caused directly or indirectly by the >>>> instructions contained within this or related message(s). >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Quantum Owners Group" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/quantumowners/605cac02.1c69fb81.6c006.721fSMTPIN_ADDED_MISSING%40gmr-mx.google.com >>>> >>>> <https://groups.google.com/d/msgid/quantumowners/605cac02.1c69fb81.6c006.721fSMTPIN_ADDED_MISSING%40gmr-mx.google.com?utm_medium=email&utm_source=footer> >>>> . >>>> -- >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Quantum Owners Group" group. >>>> To post to this group, send email to [email protected] >>>> To unsubscribe from this group, send email to >>>> [email protected] >>>> For more options, visit this group at >>>> http://groups.google.com/group/quantumowners?hl=en >>>> >>>> IMPORTANT NOTE: All information presented herewith is provided on an >>>> "As Is" basis, without warranty or the implication thereof. Neither the >>>> Quantum Owners Club nor the individuals associated with the Quantum Owners >>>> Club or in the preparation of the above information shall have any >>>> liability to any person or entity with respect to liability, loss, or >>>> damage caused or alleged to be caused directly or indirectly by the >>>> instructions contained within this or related message(s). >>>> --- >>>> >>> You received this message because you are subscribed to a topic in the >>>> Google Groups "Quantum Owners Group" group. >>>> To unsubscribe from this topic, visit >>>> https://groups.google.com/d/topic/quantumowners/h0WcBPGGEmI/unsubscribe >>>> . >>>> To unsubscribe from this group and all its topics, send an email to >>>> [email protected]. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/quantumowners/F9F61C313F874DC69459BA51EB68A588%40JimQuad >>>> >>>> <https://groups.google.com/d/msgid/quantumowners/F9F61C313F874DC69459BA51EB68A588%40JimQuad?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >> -- >> You received this message because you are subscribed to the Google Groups >> "Quantum Owners Group" group. >> To post to this group, send email to [email protected] >> To unsubscribe from this group, send email to >> [email protected] >> For more options, visit this group at >> http://groups.google.com/group/quantumowners?hl=en >> >> IMPORTANT NOTE: All information presented herewith is provided on an "As >> Is" basis, without warranty or the implication thereof. Neither the Quantum >> Owners Club nor the individuals associated with the Quantum Owners Club or >> in the preparation of the above information shall have any liability to any >> person or entity with respect to liability, loss, or damage caused or >> alleged to be caused directly or indirectly by the instructions contained >> within this or related message(s). >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "Quantum Owners Group" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/quantumowners/h0WcBPGGEmI/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/quantumowners/4ccd9719-0212-4222-ad27-68cba4df9db5n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/quantumowners/4ccd9719-0212-4222-ad27-68cba4df9db5n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- > -- > You received this message because you are subscribed to the Google Groups > "Quantum Owners Group" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/quantumowners?hl=en > > IMPORTANT NOTE: All information presented herewith is provided on an "As > Is" basis, without warranty or the implication thereof. Neither the Quantum > Owners Club nor the individuals associated with the Quantum Owners Club or > in the preparation of the above information shall have any liability to any > person or entity with respect to liability, loss, or damage caused or > alleged to be caused directly or indirectly by the instructions contained > within this or related message(s). > --- > You received this message because you are subscribed to the Google Groups > "Quantum Owners Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/quantumowners/CADm3PgQK8dY2TBv9HRj8FxC1XXsJ-CTaEX95No9-AueVX421%2Bg%40mail.gmail.com > > <https://groups.google.com/d/msgid/quantumowners/CADm3PgQK8dY2TBv9HRj8FxC1XXsJ-CTaEX95No9-AueVX421%2Bg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. 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