Losh's VR Ute build thread

[Lex]

How is the battery?
Is it holding its charge?

 

[losh1971]

Yeah battery is kicking the engine over no problems at all now. Also miss on initial start has gone. Must have been infrequent drives and short trips. Battery will go on charger once a fortnight from now on.

 

[losh1971]

Another run and it's 14deg outside. I left the bonnet open for over an hour and then checked the MAT. It really didn't drop below 44deg. I am wondering now if the runner tape is somehow increasing the MAT, anyone know if this could be the case? Intake pipe is luke warm, I don't get why them MAT would be hotter. Only other explanation is it is related to something else and I am not using the accurate testing methods.

 

[Dylan kingswood]

What sort of insulation, it could be absorbing the heat ?

 

[losh1971]

Just runner tape, Dylan. I have done some searching and it would appear that another member had a similar thing happen when he insulated his OTR intake. I am now wondering if the runner tape is actually decreasing the cool air flow over the intake tube, I'd say it isn't heat soaking the tube as such. I want to have another run tonight if I can with the tape on. Bonnet is up and outside temp should be below 14deg. Should cool the manifold a reasonable amount before I have another run.

 

[losh1971]

Ambient of around 8-9deg this was the best I got with the wrap still on. Debating now whether to waste tape and try it without. I am thinking the heat shield is doing little if anything at all to lower MAT.

 

[losh1971]

More results, testing has been done without the runner tape and best I got this time was around 41deg. I was wrong in thinking my MAT went up. I just realised yesterday I was on 36deg not below 30deg. Should have checked my logs better and or my posts. I am now thinking yes the wrap does lower the MAT. Bummed because I ripped it all off, oooops.

 

[losh1971]

OK final test for the night. I am now confident the runner tape lowers the MAT. All I can put the high figure earlier today was probably a combination of heat soak and possibly higher ambient temps. I think the tape lowers the MAT by around 4 - 5deg. I felt the heat of the intake tube after a run without the tape and it was fairly warm, where as with tape it's barley warm.

 

[Wozza]

maybe one of these...now getting very hard to find
https://www.gumtree.com.au/s-ad/pen...sion/vn-vp-vr-manifold-heat-shield/1179913489

 

[losh1971]

yes I have never seen one but they would help for sure.