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| Author | Subject: Max lift at TDC? |
 dan gti-6
Regular  Location: Winchester Registered: 26 Jan 2008 Posts: 112 Status: Offline |
Post #26
Im unsure on prices to be honest but will find out tomorrow and report back!Yeah ideally you want aftermarket piston so you can raise the CR as well as gaining valve clearance. I just got the impression from the first page that you wanted to build an engine properly but on a budget, which is fine ive been thinking about building an 88mm lump for a while! Bear in mind pistons are about |
 Posted 20th May 2009 at 23:13
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #27
Well so far from the bits I've got I can build an engine with a 10.9 compression ratio, or if I get hold of an 88mm crank 13-1  The actual parts have cost me about ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 20th May 2009 at 23:38
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matty_rallye
Senior User  Location: Devizes Registered: 28 Oct 2005 Posts: 966 Status: Offline |
Post #28
An alternative is to have Nissan pistons machined (see pic) and fitted which is what Sandy fitted into mine. 87mm though so block will need to be bored.  ________________________________________ 2.1 16v 306 Rallye. |
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Posted 21st May 2009 at 00:36
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dan gti-6
Regular Location: Winchester Registered: 26 Jan 2008 Posts: 112 Status: Offline |
Post #29
matty_rallye wrote: An alternative is to have Nissan pistons machined (see pic) and fitted which is what Sandy fitted into mine. 87mm though so block will need to be bored. What pistons are they exactly? I rebore alot of nissan blocks at work and flat top RB25 (GTS) pistons look similar to 6 ones, although i havent got round to measuring either up yet! |
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Posted 21st May 2009 at 04:10
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #30
RB25 is 86mm though? of course they aren't after a rebore ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 21st May 2009 at 04:17
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matty_rallye
Senior User Location: Devizes Registered: 28 Oct 2005 Posts: 966 Status: Offline |
Post #31
N/A 300zx pistons!________________________________________ 2.1 16v 306 Rallye. |
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Posted 21st May 2009 at 23:39
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vts_tibi
Seasoned Pro  Location: Nuneaton Registered: 27 Apr 2007 Posts: 1,194 Status: Offline |
Post #32
I have a Peter Taylor stg.1 inlet camshaft, and I would be curious what you guys think about it's specs. :"Duration 226 deg. @ 0.050" Max. Lift 0.350" Lift @ TDC - 0.065" (but a range of 0.065-0.075 is acceptable for fine tuning)" It's a regrind from an XU10J4R camshaft to stg.1 XU10J4RS spec. ________________________________________ VTSbest 60' : 2.272 best 1/8 ET : 9.375 @ 74.42mph best 1/4 ET: 14.603 @ 97.047mph Team Trackday™ |
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Posted 22nd May 2009 at 15:38
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sandy
Junior User  Location: Truro Registered: 02 Oct 2005 Posts: 70 Status: Offline |
Post #33
matty_rallye wrote: N/A 300zx pistons! It was far too much work, I'm not in a hurry to do that again! |
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Posted 23rd May 2009 at 13:19
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mark-house
Seasoned Pro  Location: Bury St Edmunds Registered: 07 Apr 2009 Posts: 1,096 Status: Offline |
Post #34
So to fit some uprated cams and to have safe clearance at TDC what pistons are required? Im assuming some forged aftermarket ones but does anyone know who makes them?________________________________________ Peugeot 306 GTi 6BMW 320 td compact M-sport 1967 Mini Cooper 1990 Jaguar XJR 4.0 |
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Posted 26th May 2009 at 17:52
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #35
Wossner, Accralite, Omega, JE, Arias, Cosworth Mahle and many many others.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 26th May 2009 at 18:07
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o_tateuk
Regular  Location: Oakham Registered: 12 Mar 2009 Posts: 119 Status: Offline |
Post #36
F**k im taking my cams out! ________________________________________ Ex team china wish i hadnt done it but oh well.Now saving up the dollas for a nice bianca rallye! May the search commence!!!! 205 1.8 Derv! (The work run slag)  2nd 205 but with D-Turbo power! |
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Posted 3rd Jun 2009 at 04:18
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chris with a pug
Seasoned Pro  Location: Southampton Registered: 16 Feb 2003 Posts: 5,366 Status: Offline |
Post #37
dan gti-6 wrote: matty_rallye wrote: An alternative is to have Nissan pistons machined (see pic) and fitted which is what Sandy fitted into mine. 87mm though so block will need to be bored. What pistons are they exactly? I rebore alot of nissan blocks at work and flat top RB25 (GTS) pistons look similar to 6 ones, although i havent got round to measuring either up yet! where do you work? |
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Posted 3rd Jun 2009 at 05:31
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buzzbrightyear
Seasoned Pro  Location: hiding all receipts for car Registered: 09 Jul 2008 Posts: 11,901 Status: Offline |
Post #38
i can remember the thread a while back with the guy having so much trouble with fitting pt82`s(i think).________________________________________ andrew315rawson@live.co.ukMoonstone phase 7 gti6 My Project thread: http://www.306gti6.com/forum/showthread.php?id=119992&page=1 |
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Posted 9th Jul 2009 at 14:06
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #39
now you know why!________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 9th Jul 2009 at 15:59
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #40
vts_tibi wrote: I have a Peter Taylor stg.1 inlet camshaft, and I would be curious what you guys think about it's specs. : "Duration 226 deg. @ 0.050" Max. Lift 0.350" Lift @ TDC - 0.065" (but a range of 0.065-0.075 is acceptable for fine tuning)" It's a regrind from an XU10J4R camshaft to stg.1 XU10J4RS spec. I forgot to post the details I had got from Newmans on their PH2- quote: Hi There, Lift @ TDC is 1.14mm, Duration @ 1.0mm is 222.5 Degrees, Duration @ 0.1mm is 256, Duration @ 0.0762mm is 264 Degrees. Regards, Ken Newman quite difficult to compare what with the metric and imperial measurement mix used ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 16th Dec 2009 at 17:10
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adam b
Seasoned Pro  Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #41
Have you worked out the cc of the engine you are considering then Mei?I was wondering about getting a couple of PeterT's cams ages ago, but decided i'd get more from making the chassis and brakes good. Your ZX is hardly slow as it is  ________________________________________ Nothing to see here |
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Posted 16th Dec 2009 at 18:05
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petert
Newbie Location: Sydney Registered: 18 Mar 2007 Posts: 38 Status: Offline |
Post #42
welshpug! wrote: quite difficult to compare what with the metric and imperial measurement mix used Not really, eg 1.14mm = 0.045" my cam has 0.065" at TDC, thus the inlet valve is opened earlier (given the same centreline) PH2 : 222.5 @ 1mm My Mi16 Stage I 16H426B : 234 deg @ 1mm so is significantly bigger and would definitely be a candidate for smashing valves into pistons if not setup correctly. Magic used it and got some very impressive hp figures. |
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Posted 17th Dec 2009 at 09:56
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vts_tibi
Seasoned Pro Location: Nuneaton Registered: 27 Apr 2007 Posts: 1,194 Status: Offline |
Post #43
at which angle does my camshaft have 1mm lift Peter?stg.1 inlet camshaft Duration 226 deg. @ 0.050 Max. Lift 0.350" Lift @ TDC - 0.065 regrind from an XU10J4R camshaft to stg.1 XU10J4RS spec. ________________________________________ VTSbest 60' : 2.272 best 1/8 ET : 9.375 @ 74.42mph best 1/4 ET: 14.603 @ 97.047mph Team Trackday™ |
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Posted 17th Dec 2009 at 18:09
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #44
I was meaning the difference in duration, i.e you measure your cam at 0.050" which is 1.27mm, giving 226 deg.Newmans measure at 1mm. and give 222.5mm. what does your gti6 cam give at 1.0mm/0.0393"? I might be interested in sending an XU10J4R or XU7 cam, or even a J4RS cam for a stage 1 grind, the results you and Magic have got from them are quite impressive I mus say Adam the engine I considered putting toge3ther would have ended up at either still at 1998 cc on the standard crank but with 2.0 RFY mi16/s16 pistons and rods and 10.9-1 compression or using a 1.9 88mm crank for 2044cc, that would need some piston skiming or a thicker gasket, or some chamber relief work as it'd give a 13-1 compression as is  ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 18th Dec 2009 at 03:01
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adam b
Seasoned Pro Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #45
Yes I got it after you explained it earlier! Interesting thread this  ________________________________________ Nothing to see here |
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Posted 18th Dec 2009 at 04:21
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #46
very interesting once more, as my headgasket has died  anyone know where and how much it'd cost to have the cutouts made a little deeper? ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 7th Jan 2010 at 04:11
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allanallen
Seasoned Pro Location: Buxton Registered: 01 May 2007 Posts: 1,399 Status: Offline |
Post #47
welshpug! wrote: very interesting once more, as my headgasket has died anyone know where and how much it'd cost to have the cutouts made a little deeper? Pm martin (crf450), I believe hes done a few sets now ________________________________________ www.bridgecraftmotorsport.co.uk |
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Posted 7th Jan 2010 at 14:04
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cjm_harris
Seasoned Pro  Location: Parts for Sale section Registered: 04 Dec 2007 Posts: 7,442 Status: Offline |
Post #48
allanallen wrote: welshpug! wrote: very interesting once more, as my headgasket has died anyone know where and how much it'd cost to have the cutouts made a little deeper? Pm martin (crf450), I believe hes done a few sets now Is this standard pistons? ________________________________________ Chris1999 China Gti6 Supercharged  [Fun car] >>Project Thread<<2000 Bianca 306 Diesel [Work runabout] |
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Posted 7th Jan 2010 at 14:05
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welshpug!
Capt Pedantic Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,838 Status: Offline |
Post #49
yes Mr Harris, would enable you to run cams like PT81's or PT82's etc without fear of bending valves.Allanallen, thanks for the tip I'll PM him now, AdamB got a price from the machine shop a few doors down from him, initial setup cost was quite a bit but gets cheaper and cheaper the more sets are done. I "think" sandy can sort them too so I'll ask him as well. I'm going to see how much extra room is needed for the first step or two in cam upgrades, generally these don't need uprated pistons I dont think. ________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 8th Jan 2010 at 01:07
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mxcrazy
Regular Location: hastings Registered: 22 Jun 2009 Posts: 456 Status: Offline |
Post #50
I am too pondering on cam shafts at the moment, i think with the pistons i have that i will be able to have some fairly large max lift figures, the cut outs are reasonably large. But, i dont want to have to rev this thing real hard to get the power from it.Welshpug, i have the drawings of these pistons ive got, do you want a look? ill have to email them over. |
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Posted 8th Jan 2010 at 01:19
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