Beastofabug
Jr. Member
Posts: 63
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« on: January 18, 2015, 17:25:50 pm » |
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hi guys looking for some advise stripped my 2332cc engine and have found a crack in no 4 cylinder they're Mahle, So looking for a new set but budgets quite tight. the AA's are a lot cheaper and I know you get what you pay for but been looking at these. https://www2.cip1.com/ProductDetails.asp?ProductCode=ACC%2DC10%2D5208Is anyone running these ? or heard of any problems ? the bug is street/strip Engine spec Full flow MOFOCO AS41 Engine case CB044 Wedge port heads 44mm inlet, 37.5 exhaust Weber's 48 IDF’s SCAT 84mm Stroke Counterweighted Crank Engle FK10 5.500" Chevy journal forged con rod set Mahle 94mm Stroker kit Manton cut to length chromoly pushrods steel straight cut cam gear set SCAT Pro Comp 1.4:1 ratio rocker arms |
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« Last Edit: January 18, 2015, 17:44:55 pm by Beastofabug »
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Zach Gomulka
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« Reply #1 on: January 18, 2015, 17:39:26 pm » |
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Never heard of Marle, wouldn't trust them  |
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Born in the '80s, stuck in the '70s.
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Beastofabug
Jr. Member
Posts: 63
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« Reply #2 on: January 18, 2015, 17:43:57 pm » |
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sorry my mistake Mahle
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leec
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« Reply #3 on: January 18, 2015, 18:10:53 pm » |
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Just buy another Mahle, good used?
Lee
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Beastofabug
Jr. Member
Posts: 63
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« Reply #4 on: January 18, 2015, 18:29:30 pm » |
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done that on a 1641 before, wasn't sure it would be a good idea on a big engine but worth a try
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BeetleBug
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« Reply #5 on: January 18, 2015, 18:30:33 pm » |
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Both are China and someone told my that they are identical? The cheap AA`s comes with a warning saying max 6000 or so rpms.
-BB-
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10.41 - 100ci - 1641ccm - 400hp
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richie
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« Reply #6 on: January 18, 2015, 18:38:45 pm » |
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So you just need a cylinder? or cylinders? pistons are good still? if so you can try getting a single cylinder to match, new or used, seems they do appear for sale but not very often, or buy a set of either AA or Mahle cylinders and sell your 3 used cylinders. I would use either brand no problem  I would be more concerned why one split on that N/A engine, something else must have been wrong to do that. cheers Richie |
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Cars are supposed to be driven, not just talked about!!! Good parts might be expensive but good advice is priceless |
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bang
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« Reply #7 on: January 18, 2015, 18:45:44 pm » |
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please measure your cylinders. i have 3 used in the workshop from my 2387cc turbo engine. one was blown.
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Lids
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« Reply #8 on: January 18, 2015, 19:23:37 pm » |
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I heard the new mahles were softer than the old ones
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Beastofabug
Jr. Member
Posts: 63
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« Reply #9 on: January 18, 2015, 19:24:53 pm » |
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cylinder length 129.77mm I/d 93.87mm
there is some scoring on piston so looking for piston and cylinder
it is quite a ridge
quick back story I didn't build the engine brought on vzi turned out good parts badly put together, so had a local guy rebuild it and so far hasn't even been run since it was built just turned over on the starter. I was adjusting the dizzy drive for a pertronix dizzy and dropped the washer which jammed the brass gear and burred it so thought id strip it and do it myself this time lucky I did
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Beastofabug
Jr. Member
Posts: 63
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« Reply #10 on: January 18, 2015, 19:40:23 pm » |
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richie
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« Reply #11 on: January 18, 2015, 19:48:55 pm » |
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Looks like it has 10mm head studs from that cylinder damage ? assuming that's the bottom in the picture? can't think of any other way to get that damage. I am surprised someone put it back together like that if they did  doesn't look like it just happened on the stand Its hard to tell how bad the piston is worn but looks like it would go again to me if the budget is tight cheers Richie |
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Cars are supposed to be driven, not just talked about!!! Good parts might be expensive but good advice is priceless |
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Beastofabug
Jr. Member
Posts: 63
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« Reply #12 on: January 18, 2015, 20:04:52 pm » |
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8mm with case savers just been out to inspect case  |
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richie
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« Reply #13 on: January 18, 2015, 20:30:05 pm » |
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Any idea what caused it then? weird place to crack a cylinder
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Cars are supposed to be driven, not just talked about!!! Good parts might be expensive but good advice is priceless |
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Beastofabug
Jr. Member
Posts: 63
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« Reply #14 on: January 18, 2015, 20:42:58 pm » |
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no idea but it is proud
think its time to sweet talk the bank bite the bullet and go new case as well to far in to just give up
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Lids
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« Reply #15 on: January 18, 2015, 23:13:04 pm » |
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is the crack where it touches the case saver?
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Jim Ratto
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« Reply #16 on: January 18, 2015, 23:24:22 pm » |
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something get between top of piston and head? Seen this exact damage before due to debris going through motor, including the case damage.
Looks for witness marks in head.
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Beastofabug
Jr. Member
Posts: 63
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« Reply #17 on: January 18, 2015, 23:38:37 pm » |
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Crack is at the case saver is
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Jim Ratto
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« Reply #18 on: January 18, 2015, 23:49:28 pm » |
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that FK10 isn't that radical of a cam, but what was/is P to V clearance? I doubt valve float would have yanked the head stud like that/split a cylinder but parts running into each other sure will.
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Martin S.
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« Reply #19 on: January 20, 2015, 04:20:12 am » |
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I used a set of the slipper skirt AA's like you linked. At the time CIP was out of their AA forged versions so I got the cheaper ones instead. Turned out all good! The pistons were thick enough at the crown to allow some 0.080" dishing for the turbo and to keep the squish up. I opted for Total Seal top rings, but even the supplied rings were usable. The advantage of the AA slipper skirt design over the Mahles is the added support under the crown of the piston. The other hack was to get them professionally honed on a machine and they said the cylinders did need the honing to be square but I had the same thing done with Mahles years ago so no difference with that either. Get em!
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Cal Look white 68 Bug with AJ Sims EFI Turbo 2332. 194hp 240tq @ 5500 rpm 3psi boost.
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K-Roc
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« Reply #20 on: January 21, 2015, 00:07:11 am » |
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Those case savers should be spot faced below the deck.
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max, Der Bahnstormerz
Newbie
Posts: 49
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« Reply #21 on: January 31, 2015, 20:18:57 pm » |
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my guess is the cylinders weren't sitting squarely to the case and the piston was forced to travel in an odd direction which caused the odd wear marks near
the gudgeon in.
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56BLITZ
DKK
Sr. Member
Posts: 271
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« Reply #22 on: February 02, 2015, 03:15:00 am » |
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The head stud is bottomed out in the case-saver . . . the head stud is slightly too long . . . your "builder" tried to turn the head stud in to fit the rocker assembly . . . the case-saver rotated and busted the thin spigot area of the barrel . . . BUMMER!  As mentioned . . . look for a replacement P/L if the rest of the set has low running time. |
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Jesucristo es mi Señor y Salvador!
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