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Sealing Under Body?

Claying, polishing, waxing... share your secrets in here.
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Looney
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Sealing Under Body?

Post by Looney » Wed Apr 04, 2018 5:51 pm

Anyone done this to protect from rust, i did it on my mx5 but that thing was a nightmare.

As preventative maintenance?
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Smartbear
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Sealing Under Body?

Post by Smartbear » Wed Apr 04, 2018 6:04 pm

Looney wrote: Wed Apr 04, 2018 5:51 pm Anyone done this to protect from rust, i did it on my mx5 but that thing was a nightmare.

As preventative maintenance?
From what I’ve heard Z4’s are very robustly engineered underneath, I don’t think there’s any need to underseal them? :?
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e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

Looney
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Sealing Under Body?

Post by Looney » Wed Apr 04, 2018 6:08 pm

Smartbear wrote: Wed Apr 04, 2018 6:04 pm
Looney wrote: Wed Apr 04, 2018 5:51 pm Anyone done this to protect from rust, i did it on my mx5 but that thing was a nightmare.

As preventative maintenance?
From what I’ve heard Z4’s are very robustly engineered underneath, I don’t think there’s any need to underseal them? :?
Rob
Rust proofing, was just a query.
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Anmarube
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Sealing Under Body?

Post by Anmarube » Wed Apr 04, 2018 7:54 pm

I waxoyled mine last week. Got in on the ramp. Masking film over the bodywork. Wheels off and arch liners. Good clean with steam and airline. Masked a few things off and went for it. Looks very neat although their was no rust anywhere I could find. Bumpers off next to see what's lurking under them.
Plan to keep it for a long time and it's mechanically very well. Paintwork to sort but running behind schedule on that as other work keeps popping up.
Definitely worth doing if you have access to a ramp and it's a keeper.

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Sealing Under Body?

Post by Looney » Wed Apr 04, 2018 8:02 pm

Anmarube wrote: Wed Apr 04, 2018 7:54 pm I waxoyled mine last week. Got in on the ramp. Masking film over the bodywork. Wheels off and arch liners. Good clean with steam and airline. Masked a few things off and went for it. Looks very neat although their was no rust anywhere I could find. Bumpers off next to see what's lurking under them.
Plan to keep it for a long time and it's mechanically very well. Paintwork to sort but running behind schedule on that as other work keeps popping up.
Definitely worth doing if you have access to a ramp and it's a keeper.
Think so but dont have a ramp or the skill.
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Sealing Under Body?

Post by Anmarube » Wed Apr 04, 2018 8:08 pm

Maybe put it on axle stands and paint it on with a brush. Mines on a 54 plate so 14 years old now. Looked great underneath but nothing lasts forever
I have a coupe also and that's next on the ramp for same job.
Bit of Waxoyle never did any harm.

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Sealing Under Body?

Post by Behr » Wed Apr 04, 2018 10:14 pm

I used Waxoyl once on my E30 Alpina. Warmed the tin in a bucket of hot water and sprayed it using an old fashioned Schultz bitumen ‘stonechip’ gun. Whilst it was relatively easy to apply, it stays too runny to be effective against exposure to road spray IMO. You’re then left with the old fashioned bitumen products which hold moisture and are a nightmare to live with after.

When it came time to under seal my 2002 restoration I used a combination of Bilt Hamber S-50 on the internal cavities (doors, chassis rails,cills) and Dynax-UB on the exposed surfaces. The S-50 is wetter and more seeking and the UB dries harder and is therefore more resilient for the floor pan. It’s also available in clear and black. Both are applied from aerosols which come with a selection of spray nozzles and injection lances. It is very impressive stuff. Take a look at the specs and the results on the Bilt Hamber website. Sure it’s more expensive but even so, I’ll never use Waxoyl again.

The E85 might be well protected but it can’t hurt to give the underside great protection if it’s a keeper. if I was going to invest the time in doing the job then I’d want to use the best products available.
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Sealing Under Body?

Post by ph001 » Wed Apr 04, 2018 10:24 pm

It’s mainly things like the brake pipes that suffer and there is a very easy answer to that called ACF50. Not expensive, couldn’t be easier to apply and it really works. Been using it on my motorbike for years.
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Sealing Under Body?

Post by Smartbear » Wed Apr 04, 2018 10:43 pm

ph001 wrote: Wed Apr 04, 2018 10:24 pm It’s mainly things like the brake pipes that suffer and there is a very easy answer to that called ACF50. Not expensive, couldn’t be easier to apply and it really works. Been using it on my motorbike for years.
What bike have you got? :?
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e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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Sealing Under Body?

Post by Anmarube » Thu Apr 05, 2018 5:22 am

Behr wrote: Wed Apr 04, 2018 10:14 pm I used Waxoyl once on my E30 Alpina. Warmed the tin in a bucket of hot water and sprayed it using an old fashioned Schultz bitumen ‘stonechip’ gun. Whilst it was relatively easy to apply, it stays too runny to be effective against exposure to road spray IMO. You’re then left with the old fashioned bitumen products which hold moisture and are a nightmare to live with after.

When it came time to under seal my 2002 restoration I used a combination of Bilt Hamber S-50 on the internal cavities (doors, chassis rails,cills) and Dynax-UB on the exposed surfaces. The S-50 is wetter and more seeking and the UB dries harder and is therefore more resilient for the floor pan. It’s also available in clear and black. Both are applied from aerosols which come with a selection of spray nozzles and injection lances. It is very impressive stuff. Take a look at the specs and the results on the Bilt Hamber website. Sure it’s more expensive but even so, I’ll never use Waxoyl again.

The E85 might be well protected but it can’t hurt to give the underside great protection if it’s a keeper. if I was going to invest the time in doing the job then I’d want to use the best products available.
Interesting....going to look into both those products.

Cheers for info... :thumbsup:

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ph001
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Sealing Under Body?

Post by ph001 » Thu Apr 05, 2018 7:32 am

Smartbear wrote: Wed Apr 04, 2018 10:43 pm What bike have you got?
An old Honda CB500. Right rocket ship!
2007 E85 Z4 3.0Si manual :driving:
19" CSL's | Eibach Springs | Aeroskirts | Z4M front bumper | Clear brake light | ZHP | RCH+| Stubby

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Sealing Under Body?

Post by Smartbear » Thu Apr 05, 2018 8:08 am

ph001 wrote: Thu Apr 05, 2018 7:32 am
Smartbear wrote: Wed Apr 04, 2018 10:43 pm What bike have you got?
An old Honda CB500. Right rocket ship!
The liquid cooled version from the 90’s? James Toseland raced one of those 8)
Deserves a pic I reckon :thumbsup:
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e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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1000rr
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Sealing Under Body?

Post by 1000rr » Thu Apr 05, 2018 9:21 am

+1 on the ACF50. :thumbsup:
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