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displaying posts 1 to 9 of 9
| Author | Subject: Biggest diameter pistons |
 pete_rallye
Seasoned Pro  Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #1
Anyone know of any XU10 engines reliably running larger than 87mm pistons? Just come across some 88mm ones and am wondering if the cylinder walls are getting a bit thin with 88mm? Thanks. ________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
 Posted 15th Apr 2019 at 23:47
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #2
with core shift and loose tolerances in centring the tooling going 88mm is pushing it a bit, I don't know of any that were built at 88mm that are still about, 87mm seems to be fine however and more readily available.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 16th Apr 2019 at 12:37
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pete_rallye
Seasoned Pro Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #3
Cheers, I was a bit surprised when I came across the pistons. I remember pug1off talking about building one but not sure if they did it not. On another note are all XU/XUD engines the same block height? ________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
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Posted 16th Apr 2019 at 19:15
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #4
alloy xu are shorter than iron block, xu and xud the same (almost identical infact, but still a different casring I believe, as the xud bore is only 83mmxud11 might differ, there are a few differences with mounting thoss I hear, though the crank swaps dine, thats what I have in my 2.2 ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 17th Apr 2019 at 01:40
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pete_rallye
Seasoned Pro Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #5
Cheers. I've got an xud11 block but not to hand but it's definitely different in terms of water manifolds and stuff. What's the spec of your 2.2? Rod length, compression height etc? Did you use any standard rods or pistons or is it all custom? ________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
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Posted 17th Apr 2019 at 07:55
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #6
cant use standard rods on the 2.1 crank as its a wider journal, so its 158mm robson rods to suit and a sandy modified QED Omega XE piston, ended up at 12.5-1 I think, newman ph4's (wildest hydraulic cam for this engine off the shelf)3 angle valve seats and the throats of the ports below the seats were cleaned out by the seat cutter but otherwise standard head casting piper double springs, refreshed hydraulic tappets, modified oil spray bars satchell inlet, jenveys, satchell trumpets, standard exhaust manifold. 8 injectors, DTA S40 mapped by sandy. ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 17th Apr 2019 at 13:02
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pete_rallye
Seasoned Pro Location: Yorkshire Registered: 12 Dec 2002 Posts: 5,253 Status: Offline |
Post #7
Any idea what the compression height is on your pistons? No thoughts of going with longer rods? What torques does your have? ________________________________________ Oulton Park in a BTCC 306 vid 1Oulton Park in a BTCC 306 vid 2 Lap of the 'ring |
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Posted 17th Apr 2019 at 22:30
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Denis
Regular  Location: Cambridge Registered: 07 Sep 2004 Posts: 493 Status: Offline |
Post #8
205 Xu13j4: https://www.205gtidrivers.com/forums/topic/67295-project-project-205-xu13j4 http://projects.205gtidrivers.com/b1ack_mi16-engine?page=1 ________________________________________ Cherry Red Rallye Project threadWhiteBMW M140i |
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Posted 17th Apr 2019 at 23:16
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miles
Seasoned Pro  Location: Ringwood Registered: 28 Dec 2002 Posts: 3,433 Status: Offline |
Post #9
Did a 88mm Turbo one without any issues at all________________________________________ 306 Rallye Sptint/Race Car, 205 CTI 1.9 8v to name a fewRoad, Track and Race/Rally car preparation to your personal requirements, Full Workshop & Diagnostic Facilities New and Second parts, from Plugs to Turbo's We now also carry out Routine Servicing www.pugracing.com & FB Page, https://www.facebook.com/PugRacing Ebay; http://stores.ebay.co.uk/Pug-Racing-Shop 2012/2013/2014/2019 Class Winners at Gurston Down Speed Hillclimb & Joint overall, Class record too along the way, |
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Posted 2nd May 2019 at 23:38
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