Questions about cooling/power

Engines and Engine Systems
Clem
Patrolman
Patrolman
Posts: 905
Joined: 19 Jun 2013 15:16
Full Name: Clem Daniel
Nickname: Clem
Home Town: Johannesburg
Current 4x4: Patrol 4.8
Home Language: English
Has thanked: 39 times
Been thanked: 39 times

Re: Questions about cooling/power

Post by Clem »

Blitzpatrollie wrote:whether running too hot is costing me power
The biggest factor is probably air density (well, that and the sheer weight of the machine) - which is why your car has more grunt on a cold day than on a hot day. With branches your air intake system is heating the intake air up even more than it otherwise would. Try insulating your air intake system. Should help, at least a little.
User avatar
Blitzpatrollie
Senior Member
Senior Member
Posts: 53
Joined: 03 Oct 2013 13:59
Full Name: Gavin Kukard
Nickname: Gavin
Home Town: Croc Valley Conservancy, Nelspruit
Current 4x4: 2003 Nissan Patrol 4.8 GRX Auto (Gold)
Home Language: English
Been thanked: 9 times

Re: Questions about cooling/power

Post by Blitzpatrollie »

Hi Clem,

Yep I posted a thread a while ago asking whether I can use ceiling type insulation to wrap up my intake pipe, but no clear answers as yet. But intake system gets VERY hot. The hose clamp holding the part where the MAF sensor is gets so hot after even 3 minutes of idling, that it burns me when I touch it...

What you think??
User avatar
Peter Connan
Moderator
Posts: 6138
Joined: 10 Sep 2010 07:21
Full Name: Peter Connan
Nickname: Piet
Home Town: Kempton Park
Current 4x4: 1996 Patrol 4.5SGL
Home Language: Afrikaans
Location: Kempton Park
Has thanked: 1124 times
Been thanked: 1038 times

Re: Questions about cooling/power

Post by Peter Connan »

That doesn't sound good. Whatever you use for insulation, make sure it'sfire resistant and will not absorb oil (which can turn it into a fire hazard over time).

Engine temperatures in the normal range should not affect power, but high inlet temperatures would.
Mag ons ons kenniskry met lekkerkry aanhoukry.
User avatar
Blitzpatrollie
Senior Member
Senior Member
Posts: 53
Joined: 03 Oct 2013 13:59
Full Name: Gavin Kukard
Nickname: Gavin
Home Town: Croc Valley Conservancy, Nelspruit
Current 4x4: 2003 Nissan Patrol 4.8 GRX Auto (Gold)
Home Language: English
Been thanked: 9 times

Re: Questions about cooling/power

Post by Blitzpatrollie »

Sharp thanks Pete. Running some tests on the MAF sensor tomorrow morning again. Methinks i may be onto something (see my other post regarding voltage on MAF).

Apparently faulty sensor can cause lack of power. Will keep you guys posted :)
Clem
Patrolman
Patrolman
Posts: 905
Joined: 19 Jun 2013 15:16
Full Name: Clem Daniel
Nickname: Clem
Home Town: Johannesburg
Current 4x4: Patrol 4.8
Home Language: English
Has thanked: 39 times
Been thanked: 39 times

Re: Questions about cooling/power

Post by Clem »

Blitzpatrollie wrote:Hi Clem,

Yep I posted a thread a while ago asking whether I can use ceiling type insulation to wrap up my intake pipe, but no clear answers as yet. But intake system gets VERY hot. The hose clamp holding the part where the MAF sensor is gets so hot after even 3 minutes of idling, that it burns me when I touch it...

What you think??
I think you must get some of the reflective insulating fabric used in racing cars from ATS Motorsport. It will help at least to some degree.

But like Peter says, that amount of heat so quickly is very unusual.
User avatar
Kagiso II
Patrolman 1000+
Patrolman 1000+
Posts: 3461
Joined: 10 Jun 2009 16:58
Full Name: Mac Mc Menamin
Nickname: Oom Mac [Uncle Mac] [Uncle] [Oompie] Kagiso
Home Town: BrentwoodPark, Benoni
Current 4x4: 1982 Datsun Safari 2,8 aka LOBO; [1,300,000 Km verby !]
'99 PATROL 4,2 diesel.
2012 Jimny [SWAMBO se Kantoor-toe]
Home Language: AFRIKAANS
Location: Benoni and wherever the Outreach takes me.
Has thanked: 299 times
Been thanked: 160 times
Contact:

Re: Questions about cooling/power

Post by Kagiso II »

die siffie voor die fuel filter is vuil .. maak skoon die ding. :salute:
Don't bring God down to your level of faith ... bring your faith up to His level!
Post Reply

Return to “09. Engines”

Who is online

Users browsing this forum: No registered users and 4 guests