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displaying posts 1 to 25 of 41
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| Author | Subject: Port and polished cylinder head |
 will1tom2
Newbie  Location: walsall Registered: 29 Jun 2010 Posts: 19 Status: Offline |
Post #1
Does anyone have any experience of gas flowing cylinder head. I am looking to tune my engine and spoke to a cylinder head specialist, he recomended having the head gas flowed and claimed it would give 20bhp. looking to fit kent pt81 cams and jenvy throttle bodies. Would doing the cylinder head as well be worth while. Know a guy who runs a standard engine with cams and throttle bodies at 205bhp________________________________________ paul |
 Posted 15th Jul 2011 at 01:35
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adam b
Seasoned Pro  Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #2
You get more by spending money on the pistons, rods and going 2.1 or 2.2________________________________________ Nothing to see here |
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Posted 15th Jul 2011 at 02:26
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mr swampy s16
**BAD SELLER**  Location: out and about Registered: 22 Oct 2003 Posts: 10,550 Status: Offline |
Post #3
Its a very good head to start with and very difficult to gain more power from. |
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Posted 15th Jul 2011 at 02:54
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gocart man
Junior User Location: east halton Registered: 09 Jan 2008 Posts: 87 Status: Offline |
Post #4
Hi Paul,Did you speak to Andy at cylinder head developments by any chance? Mike |
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Posted 15th Jul 2011 at 03:25
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kenny phase1
Newbie Location: basingstoke Registered: 09 Jul 2011 Posts: 33 Status: Offline |
Post #5
I had my head done and it makes a slight differance in flow but its the throats that need more attention to be fair.________________________________________ kenny |
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Posted 15th Jul 2011 at 15:40
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adam b
Seasoned Pro Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #6
kenny phase1 wrote: I had my head done and it makes a slight differance in flow but its the throats that need more attention to be fair. How can you tell if its made a difference? Not being arsey, just genuinely interested to know! ________________________________________ Nothing to see here |
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Posted 15th Jul 2011 at 15:57
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b11 bob
Banned! Location: birmingham Registered: 19 Dec 2010 Posts: 265 Status: Offline |
Post #7
TB on a standard engine dependant on its condition should see you get 190 to 200 bhp Kent pt 81 should get you 20 to 25 bhp Gas flowed head alone is worth around 10 bhp Head/ cams pt 81/Tb all in around 225 bhp plus Im having my head done and will have pt 80 cams fitted ive been told this will give me 30 bhp plus I got 213 bhp on a standard head and cams which upset a lot of people and tuners because they say you cant get this much power on a standard engine So if i can do it i cant see why you cant just be carefull not to get ripped off by certain tuners who only want your money Good luck ________________________________________ 205 GTI6 235 bhp at 7400 rpm |
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Posted 15th Jul 2011 at 18:57
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adam b
Seasoned Pro Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #8
Bob, I guess it entirely depends on how you are getting the figures you are quoting. Headline BHp figures mean very little really.Raised rev limit to get to 213 at all? Used to be the way to go on the ally Mi engines. Do watch out for your pistons if you are using PT80/81s on a standard engine, especially if its had its head skimmed at all. Farking close. ________________________________________ Nothing to see here |
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Posted 15th Jul 2011 at 19:36
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b11 bob
Banned! Location: birmingham Registered: 19 Dec 2010 Posts: 265 Status: Offline |
Post #9
adam b wrote: Bob, I guess it entirely depends on how you are getting the figures you are quoting. Headline BHp figures mean very little really. Raised rev limit to get to 213 at all? Used to be the way to go on the ally Mi engines. Do watch out for your pistons if you are using PT80/81s on a standard engine, especially if its had its head skimmed at all. Farking close. No have not raised limit this was at 7000 revs These gti 6 engines are very different to the MI 16 engines gti6 engine in comparasion behaves like a 8 valve engine you do not wait for 4000 revs for power gti6 gives you power and torque throughout the rev range but dies out at 7000 in standard form Headline bhp figuers do not mean nothing without driveability and torque on this forum there seems to be a concern for valve clearance ive spoken to Kent cams regarding this who assure me when using PT 80/81 cams valve clearance should not be a problem however if it has had a skim previously i can see there could be a problem if the valve clearance is close in standard form the figuers im quoting are from Longmans rolling road who is rated has a top peugeot tuner who was shocked at the bhp my engine was producing saying that hes never witnessed one producing so much power but the best bit is when other tuners say theres no way you can get this much power yet these tuners seek advice from Longman ive also taken this car to a local rolling road and have got identical figuers so it cant interepted has Longmans rolling road having a blond moment ________________________________________ 205 GTI6 235 bhp at 7400 rpm |
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Posted 15th Jul 2011 at 21:28
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bigbadbowen
Seasoned Pro  Location: Winchester Registered: 21 Nov 2003 Posts: 13,753 Status: Offline |
Post #10
Longman does not have a rolling road nor does he have a licence at present to even do live mapping on the road ????He has also retired ?? |
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Posted 15th Jul 2011 at 22:52
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b11 bob
Banned! Location: birmingham Registered: 19 Dec 2010 Posts: 265 Status: Offline |
Post #11
He done my car years ago dont know about licences etc but ive been hearing hes retired for years now ________________________________________ 205 GTI6 235 bhp at 7400 rpm |
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Posted 16th Jul 2011 at 00:22
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oldbrownshoe
Seasoned Pro  Location: Holon Israel Registered: 08 Aug 2008 Posts: 1,795 Status: Offline |
Post #12
b11 bob wrote: He done my car years ago dont know about licences etc but ive been hearing hes retired for years now He's retierd, thats true. ________________________________________ French military victories?Did you mean French military defeats? |
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Posted 16th Jul 2011 at 00:39
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b11 bob
Banned! Location: birmingham Registered: 19 Dec 2010 Posts: 265 Status: Offline |
Post #13
Pt 81 cams theres a gti6 for sale on here which has 194 bhp after a ecu remap thats 27 bhp from fitting Pt 81 cams so if you fit Tb and get your head done 225 bhp plus is realistic ________________________________________ 205 GTI6 235 bhp at 7400 rpm |
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Posted 16th Jul 2011 at 01:04
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simbob
Regular Location: cinderford Registered: 18 Feb 2010 Posts: 337 Status: Offline |
Post #14
My advice is to contact harvey Gibbs at special car services he has his own superflow engine dyno ( the only and proper way to get genuine results not bullshit readings like you can get on a normal rolling road) . He is the mutts nuts with no added bull !!!!!! ________________________________________ Happy to be back in a 306 again! |
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Posted 16th Jul 2011 at 03:14
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will1tom2
Newbie Location: walsall Registered: 29 Jun 2010 Posts: 19 Status: Offline |
Post #15
Thanks for feadback guys, I did speak to Andy at Cylinder head developments, is he reputable, sounds like kent cams pt81 is the way to go what about piper and other makes, also I was looking at bike throttle bodies found afirm who manufacture manifolds, cheaper alternative to jenvy?________________________________________ paul |
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Posted 16th Jul 2011 at 04:36
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miles
Seasoned Pro  Location: Ringwood Registered: 28 Dec 2002 Posts: 3,433 Status: Offline |
Post #16
Buy cheap buy twice, I bet you have looked at the loo manfolds, Unequal length inlet's and allot of work needed to make them flow well at least.The Stachell bodies are the best, Will make Jenveys looks poor by anything upto 25bhp on a Mi engine I'm only expecting around 230 from my engine with Jenveys, Pistons etc with some top end cams on std lifters this year, New bodies will come soon then a nice back to back test ________________________________________ 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 16th Jul 2011 at 08:18
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b11 bob
Banned! Location: birmingham Registered: 19 Dec 2010 Posts: 265 Status: Offline |
Post #17
Cylinder head develepments Andy is doing my head at the moment hes been in the buisness for years so he should know what hes doing lets see the results after hes done my head! Theres a lot of tuners been in the buisness for years most of them leave a lot to be desired some are good finding a good one can cost you a lot of wasted money ________________________________________ 205 GTI6 235 bhp at 7400 rpm |
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Posted 16th Jul 2011 at 13:17
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will1tom2
Newbie Location: walsall Registered: 29 Jun 2010 Posts: 19 Status: Offline |
Post #18
would be great to get some feadback let me know how your cylinder head turns out and power increase, The question is is does the power increase justify the cost, said around 350 plus cams________________________________________ paul |
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Posted 16th Jul 2011 at 16:04
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kenny phase1
Newbie Location: basingstoke Registered: 09 Jul 2011 Posts: 33 Status: Offline |
Post #19
adam b wrote: the throttle response was sharper and the car made a gain of 8bhp when dynod.kenny phase1 wrote: I had my head done and it makes a slight differance in flow but its the throats that need more attention to be fair. How can you tell if its made a difference? Not being arsey, just genuinely interested to know! ________________________________________ kenny |
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Posted 16th Jul 2011 at 16:11
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b11 bob
Banned! Location: birmingham Registered: 19 Dec 2010 Posts: 265 Status: Offline |
Post #20
So gas flowing your head gave 8 bhp sharper response and probaly more torque if u run Tbs u will get in more air in plus the head will allow more air in with cams u will get more air in combine the whole effect pt 80 give 18 bhp on remapped ecu on standard head surely on a gas flowed head it should give at least 26 bhp plus so a head and cams give 30 bhp more on paper it can lets see what happens when i take my car on a rolling road if i gey an extra 30 bhp plus sharper response it will be money well spent £ 500 for 30 bhp sounds ok to me unless theres s better cost effective way to get 30 bhp ________________________________________ 205 GTI6 235 bhp at 7400 rpm |
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Posted 17th Jul 2011 at 01:34
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simbob
Regular Location: cinderford Registered: 18 Feb 2010 Posts: 337 Status: Offline |
Post #21
Google nick waples hes the guy whom does all the heads for the big power cossie boys.________________________________________ Happy to be back in a 306 again! |
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Posted 18th Jul 2011 at 18:53
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adam b
Seasoned Pro Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #22
Its like Gran Tourismo in this thread  ________________________________________ Nothing to see here |
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Posted 18th Jul 2011 at 19:57
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specter
Regular  Location: Graz Registered: 05 Apr 2011 Posts: 103 Status: Offline |
Post #23
what is meant with TB?please clarify me =) |
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Posted 18th Jul 2011 at 20:06
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mcfc1987
Seasoned Pro  Location: lincoln Registered: 13 May 2008 Posts: 1,478 Status: Offline |
Post #24
b11 bobUse a full stop for f*ck sake ________________________________________ |
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Posted 18th Jul 2011 at 20:08
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adam b
Seasoned Pro Location: The Nam Registered: 24 Jan 2006 Posts: 12,828 Status: Offline |
Post #25
specter wrote: what is meant with TB? please clarify me =) Throttle body ________________________________________ Nothing to see here |
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Posted 18th Jul 2011 at 21:48
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