Exhaust options for flatdeck LCV

Post by **morrisman1** » Tue Sep 30, 2008 10:39 am

im nearly at the stage where i need an exhaust pipe for my flatdeck LCV. i was thinking a 5" tube with a 8" tip on the end.

!!!! More sensibly i think i will go with a 2" or 2.5" system with one straight through muffler in the middle under the passengers floor pan. i have the opportunity to do a couple of options so this is what i have thought of:
~ exhaust exits at rear of ute
~ exhaust exits in front of passenger side rear wheel
~ exhaust exits in front of driver side rear wheel

i know that standard, these things exited on the driver side infront of the rear wheel but i have never seen how the pipe is arranged ie. what chassis rails it goes under of over if you know what i mean.

is there any system which works better than another one at all? i heard that having it exit by the wheel can cause droning from the exhaust hitting the tread pattern. it will be quite a sporty sound but i want to keep it pretty quiet as we have tough regulations when the car isnt running standard exhausts here.

thanks in advance!

Post by **rayofleamington** » Tue Sep 30, 2008 10:54 am

It's possible to get a larger bore exhaust with standard routing - the bore will fit 1300 Marina manifold. Over here they are available 'off the shelf' for saloons and LCV's.
The LCV version is same as saloon layout until it gets just behind the cab. There it bends 90° and goes across to drivers side and exits in front of the wheel. The pipe should be further out than the wheel so it shouldn't blow on to the tyre.

Post by **bmcecosse** » Tue Sep 30, 2008 11:58 am

Even 2" is too large unless it's a full race 1275 engine. For a 1098 engine - even modified - keep it down to 1 3/4" maximum. Side or rear - it's up to you.

Post by **morrisman1** » Wed Oct 01, 2008 12:02 pm

bmcecosse wrote:Even 2" is too large unless it's a full race 1275 engine. For a 1098 engine - even modified - keep it down to 1 3/4" maximum. Side or rear - it's up to you.

im running a datsun a12 engine remember.

ill get quotes for each setup and think about it. i dont want to have a pipe too short so the right side exit might be the go. that way i have more room for mufflers aswell as i can put one in the middle where it crosses the chassis

Post by **leyther8008** » Wed Oct 01, 2008 6:15 pm

I,ve gone 70s retro with mine a chrome sidepipe! no silencer at all as such and it sounds quite nice.<br>

<br>

Post by **bmcecosse** » Wed Oct 01, 2008 6:47 pm

Seriously - you are running that on the road with no silencer - just a straight pipe ? My racing Mini had no silencer - when started up at home to put it on the trailer, the noise was fearsome ! Complaints from all around forced me to slide a silencer over the tail pipe when working at home.

Post by **rayofleamington** » Wed Oct 01, 2008 8:29 pm

As for side exit pipes - don't make it stick out to much... My scar has faded now but the memory of a hot exhaust pipe burning into my leg is still vivid (I was getting something on the back seat of the 4 door during a long drive)

Post by **morrisman1** » Thu Oct 02, 2008 8:13 am

i spoke to an exhaust shop today, i think for simplicity i will go with a left side exit exhaust. i need to put a baffled muffler in instead otherwise it will be too noisy to pass the restrictions (95db)

Post by **alex_holden** » Thu Oct 02, 2008 8:21 am

Make sure the exhaust shop doesn't forget to add the trademark Minor fart! ;)

Post by **morrisman1** » Thu Oct 02, 2008 8:57 am

is the datsun engine capable of that? if not then ill fill the vacancy gladly!

Post by **Chadbrook** » Fri Oct 03, 2008 1:33 am

Apologies to morrisman1 for a quick thread hijack

What diameter exhaust should I be looking at for a Marina 1300 engine? will a standard 1098 exhaust do or will it choke the 1275 engine?

Post by **morrisman1** » Fri Oct 03, 2008 4:07 am

got the exhaust made up today. heres some pics

i used the exisiting downpipe because it fitted perfect anyway and was in good condition.

Post by **bmcecosse** » Fri Oct 03, 2008 1:14 pm

Neat - do tell us if it 'trumpets' - the standard Minor 'trumpeting' is because the silencer is so close to the manifold - and you have retained that feature! It shouldn't matter what engine it is - gas flow is gas flow.
And yes - a 1275 will run on a standard exhaust - but it will be horribly choked at anything other than light throttle. I think some suppliers sell a larger bore exhaust to match the larger bore exhaust manifold.

Post by **Chadbrook** » Sun Oct 05, 2008 2:58 am

bmcecosse wrote:And yes - a 1275 will run on a standard exhaust - but it will be horribly choked at anything other than light throttle. I think some suppliers sell a larger bore exhaust to match the larger bore exhaust manifold.

Much as I thought

well the 1275 is a future addition, I just couldnt resist it at £45

.... one there for £25 today if you look

Post by **bmcecosse** » Sun Oct 05, 2008 1:55 pm

One 'where' for £25!!

Post by **rayofleamington** » Sun Oct 05, 2008 2:49 pm

the 1275 runs better than most people would expect with a Minor 1098 carb and exhaust. High revs are restricted (not that I could tell) but mine pulled extremely well.

Post by **bmcecosse** » Sun Oct 05, 2008 4:37 pm

Indeed- it will have bags of low end torque - but will run out of steam at the to end. However - this set-up with a low numerically final drive (ie 3.7) may well give the best economy.

Post by **rayofleamington** » Sun Oct 05, 2008 9:21 pm

However - this set-up with a low numerically final drive (ie 3.7) may well give the best economy.

indeed! That's what I was planning for the pickup but the tired old 1098 engine is still running happily, so no need for the 1275 engine yet.

Post by **bmcecosse** » Mon Oct 06, 2008 2:45 pm

Same with me - just can't the 1098 to give up!

Post by **Chadbrook** » Wed Oct 08, 2008 2:10 am

bmcecosse wrote:One 'where' for £25!!

are you bidder 2

if not I'm sorry its gone to £26 now

lol I sense this may have a few sharks circleing