What size venturis?
Do you run the bootlid closed?...... I found running one fresh air tube across the backside of the cooler helped.
hellbugged 48's and straight cuts
5,080 posts · joined Apr 2003 ·
hard lines for external oil cooler ?????
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
the vents are 40's....the 44's have 36 and 38's....
yeah i thought about scoops and stuff but means more clutter in that area.so it would be easier to just mount it up front out of the way ...
yeah i thought about scoops and stuff but means more clutter in that area.so it would be easier to just mount it up front out of the way ...
colin Fahrvergnugen
984 posts · joined Mar 2007 ·
Before you give up on the 48,s get them running spot on then make a decision.cnfabo wrote:more power😂 have not done any power runs yet,i have taken it to 6000rpm a couple of times and still have another 2000 to go...it really starts pulling from 4000.......still trying to jet the thing ....so far it wants bigger idles then 60's with the 48mm webbers....im not yet sold on that size carb and might bolt on my old 44's and see how it runs....
What size capacity is your motor and compression, rev range you said is max8000rpm. 60 idles are on the biggish side for a VW motor under 2000cc. 40mm vents are also as large as you would go on a under 2000cc, unless it,s a drag motor with no low range torque requirements.
Cheers Col
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
1916cc,10.5:1,cb2289....the only reason i went for 48's is because my head guy wanted me to chase as much hp probably.my innovative AF gauge says its lean at idle with 60's and f11's.....colin wrote:Before you give up on the 48,s get them running spot on then make a decision.cnfabo wrote:more power😂 have not done any power runs yet,i have taken it to 6000rpm a couple of times and still have another 2000 to go...it really starts pulling from 4000.......still trying to jet the thing ....so far it wants bigger idles then 60's with the 48mm webbers....im not yet sold on that size carb and might bolt on my old 44's and see how it runs....
What size capacity is your motor and compression, rev range you said is max8000rpm. 60 idles are on the biggish side for a VW motor under 2000cc. 40mm vents are also as large as you would go on a under 2000cc, unless it,s a drag motor with no low range torque requirements.
Cheers Col
colin Fahrvergnugen
984 posts · joined Mar 2007 ·
As a start i would try 55idles with 155mains and 40 vents
If you use the 38 vents go down to 150mains
You can then with these combos trim your high rpm mixture with your air jet.
hope this helps a little.
Cheers Col
If you use the 38 vents go down to 150mains
You can then with these combos trim your high rpm mixture with your air jet.
hope this helps a little.
Cheers Col
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
i tried 55 idles and it was way to lean...its got 180 airs and 155 mains currently....im off to south africa sunday morn for 6 weeks holidays so don't have any time to play till i get back..
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
Does running a front mounted cooler drop oil pressure at all?
hellbugged 48's and straight cuts
5,080 posts · joined Apr 2003 ·
No
matberry Moderator Go hard or go home
8,114 posts · joined Mar 2006 ·
No pressure drop, but I believe there has to be some loss of volume due to extra line length. The other negative is the extra oil that doesn't get changed during servicing. Porsche did it so it can't be too bad, but I prefer to keep all lines as short as possible.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
bigrudi Wolfsburg Wizard
401 posts · joined Apr 2005 ·
Ive run the cooler Rx7 up front for a while now no drop in pressure no flow issues ,temps will run higher with cooler mounted above transmission cheers Rudi
hellbugged 48's and straight cuts
5,080 posts · joined Apr 2003 ·
When I'm keen matt, I use a 20litre drum pump to prime and also push out old oil when changing
Disconnect to and from lines, add a hose clamp and catch bucket and away it goes.
Surprisingly when pidgin out the old oil with new, it goes from black old oil, thru murky mix, to clean new oil in just a few strokes of the plunger
My latest thing has been propping the bootlid at the bottom as opposed to the top, with a 10 degree drop of oil temp!
Disconnect to and from lines, add a hose clamp and catch bucket and away it goes.
Surprisingly when pidgin out the old oil with new, it goes from black old oil, thru murky mix, to clean new oil in just a few strokes of the plunger
My latest thing has been propping the bootlid at the bottom as opposed to the top, with a 10 degree drop of oil temp!
Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion
8,040 posts · joined Jan 2003 ·
any updates on the cooler and hot engine temps?
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
no not yet.just got back from africa 2 days ago..tomorow ill move the cooler up front so hopefully this fixes the temps....
Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion
8,040 posts · joined Jan 2003 ·
did moving the cooler help ? What temps are you running now ?
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
yes its up front and the temps i have seen up 140+, hope my gauge is wrong😂
Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion
8,040 posts · joined Jan 2003 ·
just put black tape over the screen !😂cnfabo wrote:yes its up front and the temps i have seen up 140+, hope my gauge is wrong😂
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
😂😂Craig Torrens wrote:just put black tape over the screen !😂cnfabo wrote:yes its up front and the temps i have seen up 140+, hope my gauge is wrong😂
hellbugged 48's and straight cuts
5,080 posts · joined Apr 2003 ·
Get a dipstick tattle tail
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
???hellbugged wrote:Get a dipstick tattle tail
hellbugged 48's and straight cuts
5,080 posts · joined Apr 2003 ·
matberry Moderator Go hard or go home
8,114 posts · joined Mar 2006 ·
Ouch, thats hot. What gauge setup, what oil & pump, what cam and CR......?????
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
castrol edge 20/50w,cb 30mm shadeck,10.5:1 ,cb2289cam speco gauge
matberry Moderator Go hard or go home
8,114 posts · joined Mar 2006 ·
Hope the gauge is wrong, maybe AFR's are lean?.....
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
4agedub Slammed & Awesome Dubber
93 posts · joined Jun 2012 ·
We use rubber 3/4" hoses on both our cars with home made oil coolers (made from intercoolers) on the dry sump return line. Works real good.
Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion
8,040 posts · joined Jan 2003 ·
Did you check your AFR ?matberry wrote:Hope the gauge is wrong, maybe AFR's are lean?.....
I hear you have a problem with your motor and the heads are off.....hope its all ok ?
humpty Bishop of Volkswagenism
3,336 posts · joined Sep 2002 ·
I don't think Chris runs any kind of AFR reader or logger....
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
Na, no probs with the motor, I pulled the heads off for a look as I had a big lean out at barbagallo in December , was my stupid fault as I ran the tank dry!dick head!!!!! Everything is back together, gearbox is finished and ready to send back from dangerous's, and all my dry sump stuff is ready to install.Craig Torrens wrote:Did you check your AFR ?matberry wrote:Hope the gauge is wrong, maybe AFR's are lean?.....
I hear you have a problem with your motor and the heads are off.....hope its all ok ?
Humpty I have a innovate afr
Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion
8,040 posts · joined Jan 2003 ·
Sounds good Chris, the dry sump will help fix oil surge and give you a few extra ponies 😎
Are you using the CB dry sump kit/parts ?
Are you using the CB dry sump kit/parts ?
colin Fahrvergnugen
984 posts · joined Mar 2007 ·
Hey Chris,
really love your work over there in the west.
140 if correct, is very hot for oil temps.
Please keep us updated in regards to your dry sump mods, i am very interested.👍👍👍
What was your reason to go to a dry sump?.
Cheers Col
really love your work over there in the west.
140 if correct, is very hot for oil temps.
Please keep us updated in regards to your dry sump mods, i am very interested.👍👍👍
What was your reason to go to a dry sump?.
Cheers Col
cnfabo Custom Title Time!
1,353 posts · joined Apr 2008 ·
Craig & col , Rene seams to think ill get lower temps with the dry sump setup as I'm keeping oil out of sitting in the case. I also got rid of the eBay rx7 oil cooler and I got 2 mocal 11 row coolers instead. I'll post some pics up. Yep cb pump and pulley. Dash 12 lines the whole system and a friend made a big tank for me.
Cheers
Cheers