Driving a carb car from the reef to the coast
- smashedmink
- Committee Member
- Posts: 726
- Registered for: 10 years 9 months
- Car Make: VW
- Car Model: VW Fox
- Membership No: 1929
- Location: Roodepoort
Driving a carb car from the reef to the coast
Hey guys (and girls)
I am in need of some advice.
I’ve never owned a carbureted car until the Fox so there are still some things I’m learning.
I’m planning a trip down to the coast at the end of the year and will be driving the Fox.
What I need to know, is there anything I need to worry about regarding the atmospheric pressure?
Would I need to do anything to have her run properly down at the coast?
Wouldn’t want to get stuck or have my car run shitty down there, no FI means no automatic compensation.
Any advice would be great!
Thanks in advance...
Sent from my iPhone using Tapatalk
I am in need of some advice.
I’ve never owned a carbureted car until the Fox so there are still some things I’m learning.
I’m planning a trip down to the coast at the end of the year and will be driving the Fox.
What I need to know, is there anything I need to worry about regarding the atmospheric pressure?
Would I need to do anything to have her run properly down at the coast?
Wouldn’t want to get stuck or have my car run shitty down there, no FI means no automatic compensation.
Any advice would be great!
Thanks in advance...
Sent from my iPhone using Tapatalk
Current: 1991 VW Fox 1600L
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
- ICE King
- Cadet
- Posts: 820
- Registered for: 12 years 11 months
- Car Make: VW
- Car Model: Polo GTI 20V , Mazdarati
- Location: Cape Town
Re: Driving a carb car from the reef to the coast
No Issues , I nail my carb at the coast all day every day , it will suck more fuel if there's more air but only till a certain small extent,
If anything , you'll gain more power considering theres more air.
If anything , you'll gain more power considering theres more air.
1992 Mazda 323 B3 - Masala Mods
2008 VW POLO GTI - 76mm DP + 63mm exhaust , induction, FMIC, Thanas Tuned
2008 VW POLO GTI - 76mm DP + 63mm exhaust , induction, FMIC, Thanas Tuned
- smashedmink
- Committee Member
- Posts: 726
- Registered for: 10 years 9 months
- Car Make: VW
- Car Model: VW Fox
- Membership No: 1929
- Location: Roodepoort
Re: Driving a carb car from the reef to the coast
I’m assuming your car was jetted at and for the coastal air?ICE King wrote:No Issues , I nail my carb at the coast all day every day , it will suck more fuel if there's more air but only till a certain small extent,
If anything , you'll gain more power considering theres more air.
The jets will only allow so much fuel thru, so I’m wondering if my carb that’s jetted for the reef air won’t run lean...
Sent from my iPhone using Tapatalk
Current: 1991 VW Fox 1600L
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
- panic-mechanic
- Panic's Place
- Posts: 26715
- Registered for: 21 years 8 months
- Membership No: 79
- Location: Benoni, putfontein.
Re: Driving a carb car from the reef to the coast
Yes it will be slightly too lean at the coast IF the jetting was actually modified for the reef. If it has the factory jetting it it's actually jetted for the coast.
Stephan van Tonder - Jhb - Putfontein Benoni
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10
Perfect Power dealer. I do dyno tuning.
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10
Perfect Power dealer. I do dyno tuning.
- ICE King
- Cadet
- Posts: 820
- Registered for: 12 years 11 months
- Car Make: VW
- Car Model: Polo GTI 20V , Mazdarati
- Location: Cape Town
Re: Driving a carb car from the reef to the coast
Nope , original factory Carb on my Mazda 323. Never had to tune or repair it since 12 years of ownership and had the car at reef as well.smashedmink wrote: ↑Tue Jul 17, 2018 6:24 pmI’m assuming your car was jetted at and for the coastal air?ICE King wrote:No Issues , I nail my carb at the coast all day every day , it will suck more fuel if there's more air but only till a certain small extent,
If anything , you'll gain more power considering theres more air.
The jets will only allow so much fuel thru, so I’m wondering if my carb that’s jetted for the reef air won’t run lean...
Sent from my iPhone using Tapatalk
Keep in mind we use 95 at the coast since the air pressure is higher.
1992 Mazda 323 B3 - Masala Mods
2008 VW POLO GTI - 76mm DP + 63mm exhaust , induction, FMIC, Thanas Tuned
2008 VW POLO GTI - 76mm DP + 63mm exhaust , induction, FMIC, Thanas Tuned
-
- Cadet
- Posts: 579
- Registered for: 8 years 8 months
- Location: East Rand
Re: Driving a carb car from the reef to the coast
I've driven many carb cars to the coast on holiday trips etc, never reset carb/s just drive it love the extra air down there.
-
- Lieutenant
- Posts: 1442
- Registered for: 8 years 1 month
- Location: Pretoria
Re: Driving a carb car from the reef to the coast
When I took my Fox (same HM engine as yours, completely stock, never re-jetted the carb) down to the coast, it pinged horribly, especially at medium engine loads around 2000-2500 rpm, e.g. pulling up a winding old mountain pass in 3rd gear at 40-50 km/h. I didn't have my timing light with me, so I gritted my teeth and just kept going, gearing down for higher revs and lower loads. I presume it pinged because the previous owner's workshop may have somewhat advanced the timing to give it more oomph on the Reef. Or they didn't remove and block the vacuum advance pipe before setting the timing (which one should for the HM). I never bothered to check the timing here in Pretoria, because it never pinged. It was a nasty surprise at the coast.
The least you should do, is get as much octane into your tank as you can.
If you have a timing light, you could take it with you and retard the timing by a few degrees once you get there.
Even better, you could check the timing before you leave. According to the German spec sheet I have, it should be 6° BTDC @ 950 rpm, without vacuum advance.
Centrifugal advance, also without vacuum advance, should be
... 12-17° BTDC @ 2000 rpm (i.e. a total of 18-23° if you've already set the basic timing to 6° BTDC)
... 33-37° BTDC @ 4400 rpm (i.e. a total of 39-43° if you've already set the basic timing to 6° BTDC)
The least you should do, is get as much octane into your tank as you can.
If you have a timing light, you could take it with you and retard the timing by a few degrees once you get there.
Even better, you could check the timing before you leave. According to the German spec sheet I have, it should be 6° BTDC @ 950 rpm, without vacuum advance.
Centrifugal advance, also without vacuum advance, should be
... 12-17° BTDC @ 2000 rpm (i.e. a total of 18-23° if you've already set the basic timing to 6° BTDC)
... 33-37° BTDC @ 4400 rpm (i.e. a total of 39-43° if you've already set the basic timing to 6° BTDC)
Mark R.
- - - - - - - - - -
2004 VW Golf TDI, type 1J, AHF, 317k (2016-current) --- daily
1990 VW Fox, type 16, HM, 304k (2005-current) --- spare runaround
Previous:
1992 Audi 500 SE, type C4, AAR (2001-2020) --- nice while it lasted
1983 VW Golf GTS, type 17, FR (1992-2005) --- most fun car I've ever had
1978 Audi 100 GLS 5E, type 43, WC (1991-92) --- died in the side of a Rekord who cut me off
- - - - - - - - - -
- - - - - - - - - -
2004 VW Golf TDI, type 1J, AHF, 317k (2016-current) --- daily
1990 VW Fox, type 16, HM, 304k (2005-current) --- spare runaround
Previous:
1992 Audi 500 SE, type C4, AAR (2001-2020) --- nice while it lasted
1983 VW Golf GTS, type 17, FR (1992-2005) --- most fun car I've ever had
1978 Audi 100 GLS 5E, type 43, WC (1991-92) --- died in the side of a Rekord who cut me off
- - - - - - - - - -
- smashedmink
- Committee Member
- Posts: 726
- Registered for: 10 years 9 months
- Car Make: VW
- Car Model: VW Fox
- Membership No: 1929
- Location: Roodepoort
Re: Driving a carb car from the reef to the coast
I did have the carb reconditioned at SP Carbs in kempton park about a year ago so I’m hoping they replaced the jets with the standard sizes in that case... thanks for the advice Panic!panic-mechanic wrote:Yes it will be slightly too lean at the coast IF the jetting was actually modified for the reef. If it has the factory jetting it it's actually jetted for the coast.
Sent from my iPhone using Tapatalk
Current: 1991 VW Fox 1600L
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
- smashedmink
- Committee Member
- Posts: 726
- Registered for: 10 years 9 months
- Car Make: VW
- Car Model: VW Fox
- Membership No: 1929
- Location: Roodepoort
Re: Driving a carb car from the reef to the coast
I also only use 95 at the reef for extra unicornsICE King wrote:Nope , original factory Carb on my Mazda 323. Never had to tune or repair it since 12 years of ownership and had the car at reef as well.smashedmink wrote: ↑Tue Jul 17, 2018 6:24 pmI’m assuming your car was jetted at and for the coastal air?ICE King wrote:No Issues , I nail my carb at the coast all day every day , it will suck more fuel if there's more air but only till a certain small extent,
If anything , you'll gain more power considering theres more air.
The jets will only allow so much fuel thru, so I’m wondering if my carb that’s jetted for the reef air won’t run lean...
Sent from my iPhone using Tapatalk
Keep in mind we use 95 at the coast since the air pressure is higher.
Sent from my iPhone using Tapatalk
Current: 1991 VW Fox 1600L
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
- smashedmink
- Committee Member
- Posts: 726
- Registered for: 10 years 9 months
- Car Make: VW
- Car Model: VW Fox
- Membership No: 1929
- Location: Roodepoort
Re: Driving a carb car from the reef to the coast
Thanx for the advice! I’ve got a timing light so I’ll take it down with me, I guess apart from literally swapping out the jets, adjusting the ignition timing is all I could do in the case of any problems.VAG Fan wrote:When I took my Fox (same HM engine as yours, completely stock, never re-jetted the carb) down to the coast, it pinged horribly, especially at medium engine loads around 2000-2500 rpm, e.g. pulling up a winding old mountain pass in 3rd gear at 40-50 km/h. I didn't have my timing light with me, so I gritted my teeth and just kept going, gearing down for higher revs and lower loads. I presume it pinged because the previous owner's workshop may have somewhat advanced the timing to give it more oomph on the Reef. Or they didn't remove and block the vacuum advance pipe before setting the timing (which one should for the HM). I never bothered to check the timing here in Pretoria, because it never pinged. It was a nasty surprise at the coast.
The least you should do, is get as much octane into your tank as you can.
If you have a timing light, you could take it with you and retard the timing by a few degrees once you get there.
Even better, you could check the timing before you leave. According to the German spec sheet I have, it should be 6° BTDC @ 950 rpm, without vacuum advance.
Centrifugal advance, also without vacuum advance, should be
... 12-17° BTDC @ 2000 rpm (i.e. a total of 18-23° if you've already set the basic timing to 6° BTDC)
... 33-37° BTDC @ 4400 rpm (i.e. a total of 39-43° if you've already set the basic timing to 6° BTDC)
Let’s hope for the best!
Sent from my iPhone using Tapatalk
Current: 1991 VW Fox 1600L
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
-
- Cadet
- Posts: 579
- Registered for: 8 years 8 months
- Location: East Rand
Re: Driving a carb car from the reef to the coast
The only carb fitted cars I ever driven down to the coast were all Mazda just& just filled with higher octane fuel as soon as its available (in the old days)
- smashedmink
- Committee Member
- Posts: 726
- Registered for: 10 years 9 months
- Car Make: VW
- Car Model: VW Fox
- Membership No: 1929
- Location: Roodepoort
Re: Driving a carb car from the reef to the coast
Pity we don’t get 98 at the coast anymoreMrMazda wrote:The only carb fitted cars I ever driven down to the coast were all Mazda just& just filled with higher octane fuel as soon as its available (in the old days)
Sent from my iPhone using Tapatalk
Current: 1991 VW Fox 1600L
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
Ex: 2003 Mk4 Golf GTi
132hp/98.5kw & 204nm atw @ Oettinger Edenvale
Ex: 1998 Mk3 Jetta CLi 2.0
116.6hp/87kw & 179nm atw @ Stealth (Coastal + NF 5ron)
- panic-mechanic
- Panic's Place
- Posts: 26715
- Registered for: 21 years 8 months
- Membership No: 79
- Location: Benoni, putfontein.
Re: Driving a carb car from the reef to the coast
unless specifically tuned for 95 up at the reef there is no advantage to using 95 as that setup cannot compensate for the octane. So you are really just wasting money.
Stephan van Tonder - Jhb - Putfontein Benoni
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10
Perfect Power dealer. I do dyno tuning.
'05 Audi A6 3.0L TDI Avant
'09 Touareg 3l TDI
'13 VW CC 2l tdi (repair project)
'05 Touareg v10
Perfect Power dealer. I do dyno tuning.