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2096 Posts Member #: 1111 Post Whore s wales |
9th Jun, 2008 at 07:47:39pm
just done a quick calculation, my CR works out as 9.25.
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Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
9th Jun, 2008 at 07:56:07pm
8 psi should be fine. There are no hard and fast rules, run whatever you feel comfortable with, and more importantly can run with detonation.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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2096 Posts Member #: 1111 Post Whore s wales |
9th Jun, 2008 at 08:00:19pm
its my 1st turbo build tom. was thinking of 7 psi to start with, though i think 8-9 should be safe. the only problem is i am running a dizzy, but will have it all set up properly on a good rolling road. what type of power would an engine running this boost and cr normally make?thanks |
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Site Admin 15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
9th Jun, 2008 at 08:01:39pm
Should have read "without detonation" above.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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2096 Posts Member #: 1111 Post Whore s wales |
9th Jun, 2008 at 08:22:46pm
the cam is a sw5, running a rebuilt big valve austin 1300gt head, ported and polished, maybe some a series rockers that i have bushed to 1.4 as opposed to standard a+ ones.
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1641 Posts Member #: 178 Post Whore stowmaket suffolk |
10th Jun, 2008 at 06:40:50am
i ran ran 10 psi with a locked 25 deg advance with no probs always looking for them bigger bunches of bannanas |
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 1497 Posts Member #: 100 Parisien Turbo Expert Paris\' suburb |
10th Jun, 2008 at 06:57:02am
I used 10 psi too with no probs; 9.4 cr intercooled, high grade fuel (98) at 24° max advance, but do not use this as a rule , hot day, bad tank, overheat, and you'll kiss your pistons |
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 8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
10th Jun, 2008 at 08:22:08am
Im not even going to say what I was running because of my "school boy error" on my first build! https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel
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2096 Posts Member #: 1111 Post Whore s wales |
10th Jun, 2008 at 12:13:30pm
so what sort of power would i be looking at with my engine at 10psi? still around the 110 mark? cheers |
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1641 Posts Member #: 178 Post Whore stowmaket suffolk |
10th Jun, 2008 at 08:25:43pm
and the rest i would say at least 120 ish always looking for them bigger bunches of bannanas |
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2096 Posts Member #: 1111 Post Whore s wales |
10th Jun, 2008 at 10:55:13pm
cheers |
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 2370 Posts Member #: 719 Post Whore Horndean - Near Portsmouth |
10th Jun, 2008 at 11:46:14pm
On 10th Jun, 2008 matty said:
Im not even going to say what I was running because of my "school boy error" on my first build!  Nic knows what I mean! Lol
You should be fine with 10psi especially with a well positioned IC.  Do share, just so I dont have to go through the trauma of whatever it is!!! |
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1641 Posts Member #: 178 Post Whore stowmaket suffolk |
11th Jun, 2008 at 07:15:08am
i did run 10 psi on 9.8 cr with no probs on the 1380 and made 140
always looking for them bigger bunches of bannanas |
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8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
11th Jun, 2008 at 01:39:09pm
On 10th Jun, 2008 richminiturbo. said:
On 10th Jun, 2008 matty said:
Im not even going to say what I was running because of my "school boy error" on my first build! Nic knows what I mean! Lol
You should be fine with 10psi especially with a well positioned IC. Do share, just so I dont have to go through the trauma of whatever it is!!! I fitted the actuator 180 degrees the "wrong" way so I never realised the hose was missing on the actuator....need I say more! I ran it like this for about 9 months before Nic pointed out it was missing Avon! What makes it worse is that i had no IC at the time either running 9.4:1 CR! Lol https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel
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Forum Mod  1322 Posts Member #: 28 Post Whore Milton Keynes |
12th Jun, 2008 at 08:59:54pm
Was this the same Avon you were punching holes in a actuator pipe to get more boost?? |
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520 Posts Member #: 2093 Post Whore Grenoble, France |
12th Jun, 2008 at 09:25:23pm
On 11th Jun, 2008 matty said:
I fitted the actuator 180 degrees the "wrong" way so I never realised the hose was missing on the actuator....need I say more! I ran it like this for about 9 months before Nic pointed out it was missing Avon! What makes it worse is that i had no IC at the time either running 9.4:1 CR! Lol Interesting ! How much psi do you think you had without IC ? std 998 A+, g295, MD266, RHF4, 109hp @0.8bar/5400rpm |
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8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
12th Jun, 2008 at 10:01:50pm
On 12th Jun, 2008 SumpNut said:
Was this the same Avon you were punching holes in a actuator pipe to get more boost?? Ah yeah it was but I fitted an IC the Friday morning before Avon and it really wasn't pulling. Turned out to be a hoses popping off the IC under boost. The making holes was a desprate attempt to get it to go quicker!
I know the boost reached 12 PSI, and I did have issues with pinking (on a couple of occasions) on really hot days and had a sticky valve. But must of done 6K in it that year (had it as a daily driver). I think the boost was only limited at around 12 PSI because I bolted the turbo on thinking the preload was right and turned out to be holding the wastegate only just open. The boost took a while to build up (due to wastegate being slightly open) but still pulled well. Pistons were fine on last inspection, no signs of damage due to detonation so fook knows....may of opened a can of worms here. 
I wouldn't recommend running 12 PSI with or without a cooler at a 9.4:1 CR don't get me wrong!!! You learn from your mistakes anyway..kind of! 
https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel
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520 Posts Member #: 2093 Post Whore Grenoble, France |
12th Jun, 2008 at 10:14:13pm
Wow, 12psi w/o IC.
std 998 A+, g295, MD266, RHF4, 109hp @0.8bar/5400rpm |
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8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
12th Jun, 2008 at 10:18:27pm
Im not even running 12 PSI on my new engine at the moment! Lol
https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel
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