Engine/transom bolts needed

Paul E · 29-04-2013, 08:27 PM

Where can I get engine mounting bolts online? Nice and strong please as the ones I've just taken out are more bent than Michael Barrymore at a pool party.

Can't remember the lengths but I'll get them tomorrow

Frenchbruno · 29-04-2013, 09:44 PM

Here, a lot of guys using heavy engines like HO or XS are tired to use weak Mercury 1/2 ss UNF bolts with 1/2UNF self lock brass nut. So times ago, we have decided to go with grade 8 galvanized bolt / nut /washer from Caterpillar.
They rust a bit after months in salt water use, but grade 8 bolts are pretty strong. Also, they are in inche sizes, the thread used by mercury is most of the time 1/2UNF for transom bolts, the cat bolt with self lock nut available are UNC. I can tell you these GR8 bolts are reliable. The easiest way to order is to go to the nearest Caterpillar dealer, order the parts, and the day after they are in your hand.
I've made for you a PDF document for the 1/2UNC grade 8 bolt/self locking nut and washer. You only have to choose the good bolt lenght and quantity to your cat dealer.
NB: the material of the washer and nut are also grade 8 in my document.
That's not cheap, but it's a good ratio on price/quality.
Good luck....

Paul E · 30-04-2013, 01:00 PM

Quote:

Originally Posted by Frenchbruno

Here, a lot of guys using heavy engines like HO or XS are tired to use weak Mercury 1/2 ss UNF bolts with 1/2UNF self lock brass nut. So times ago, we have decided to go with grade 8 galvanized bolt / nut /washer from Caterpillar.
They rust a bit after months in salt water use, but grade 8 bolts are pretty strong. Also, they are in inche sizes, the thread used by mercury is most of the time 1/2UNF for transom bolts, the cat bolt with self lock nut available are UNC. I can tell you these GR8 bolts are reliable. The easiest way to order is to go to the nearest Caterpillar dealer, order the parts, and the day after they are in your hand.
I've made for you a PDF document for the 1/2UNC grade 8 bolt/self locking nut and washer. You only have to choose the good bolt lenght and quantity to your cat dealer.
NB: the material of the washer and nut are also grade 8 in my document.
That's not cheap, but it's a good ratio on price/quality.
Good luck....

Thanks Bruno! Unfortunately I don't think we have a Cat dealer here... How much do you pay?

Captain Chaos · 30-04-2013, 01:14 PM

Wasnt transom bolts one of the many commodities that your Islands very own James "captain fantastic" Larbalestier was offering a little while back?

Paul E · 30-04-2013, 01:18 PM

Yeah but I'd like to have something super strong 'off the shelf' instead of something with a cut thread.

Frenchbruno · 30-04-2013, 02:35 PM

If my memory is good the price for 4 bolts is around 19€ include VAT without self-lock and no washer. For a complete set, I guess the price should be around 30€.
Note the 6 marks on the hexagonal head capscrew top check the good grade 8 steel you're looking for. Note also you have the 6marks on the self lock steel nut to ensure you're using a grade 8 lock nut.

you have a CAT dealer here:

FINNING (U.K.) LTD.
#1, NUFFIELD INDUSTRIAL ESTATE 10 ABINGDON ROAD
POOLE ENGLAND, BH17 2UG

Phone numbers:
44 1202 670900 GENERAL INFO
44 1202 684139 GENERAL INFO (FAX)

STORE HOURS STORE HOURS:
MONDAY 0700-1800, TUESDAY 0700-1800, WEDNESDAY 0700-1800, THURSDAY 0700-1800, FRIDAY 0700-1800, SATURDAY 0700-1200

Web: http://www.finning.co.uk

for other Caterpillar dealers in Uk check here.
http://www.uk.cat.com/cda/layout?m=338775&x=7#anc1

hope that helps .
Bruno

Paul E · 30-04-2013, 03:26 PM

Quote:

Originally Posted by Frenchbruno

If my memory is good the price for 4 bolts is around 19€ include VAT without self-lock and no washer. For a complete set, I guess the price should be around 30€.
Note the 6 marks on the hexagonal head capscrew top check the good grade 8 steel you're looking for. Note also you have the 6marks on the self lock steel nut to ensure you're using a grade 8 lock nut.

you have a CAT dealer here:

FINNING (U.K.) LTD.
#1, NUFFIELD INDUSTRIAL ESTATE 10 ABINGDON ROAD
POOLE ENGLAND, BH17 2UG

Phone numbers:
44 1202 670900 GENERAL INFO
44 1202 684139 GENERAL INFO (FAX)

STORE HOURS STORE HOURS:
MONDAY 0700-1800, TUESDAY 0700-1800, WEDNESDAY 0700-1800, THURSDAY 0700-1800, FRIDAY 0700-1800, SATURDAY 0700-1200

Web: http://www.finning.co.uk

for other Caterpillar dealers in Uk check here.
http://www.uk.cat.com/cda/layout?m=338775&x=7#anc1

hope that helps .
Bruno

Very helpful Bruno thankyou very much