Supercharged LD28s

Discuss (and cuss) the Nissan LD-series OHC Six diesel engine, popularly available in the US in 1981-83 Datsun/Nissan Maxima Sedans & Wagons.

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supercharged
Posts: 2
Joined: 13 years ago
Location: NEW ZEALAND

Supercharged LD28s

#1

Post by supercharged » 13 years ago

I run twin supercharged LD28s approx 120 hp each thru alpha 1 mercruiser stern legs on my 30 ft 5.5 ton fibreglass boat they rev out to 3800 rpm with the props set at 14 in pitch and give a top speed of 17 knots, should I adjust the pitch up to bring the revs back [propulse adjustable props] and keep the speed or would this possibly work the engines to hard spinning bigger pitch props,normal cruising speed is 12 knots at 2800rpm using about 20 litres an hour
the worst day boating is better than the best day at work

Fella
Posts: 2
Joined: 13 years ago
Location: New Zealand

#2

Post by Fella » 13 years ago

Hi, I don't have an answer for your question but am looking at putting LD28's in a 8meter shark cat I have. Wondering how you supercharged the ones you have and also is your 20 ltrs an hour per engine or total fuel consumption. Thanks.

supercharged
Posts: 2
Joined: 13 years ago
Location: NEW ZEALAND

#3

Post by supercharged » 13 years ago

My engines were supercharged when I got the boat,The guy I bought it off did the job maybe you could try him,His name is Greg Surgenor his business is Rimu Engineering in Blenheim,he has a website but you will have to google it as im not sure of the address,fuel usage at 2800rpm is about 20-25lts an hour combined giving me cruise speed of 12kts but at 3500 rpm speed is 18kts and fuel is about 20-25 lts per side so about 40lts an hour thats with the props set at 15 inch pitch,Ive tried the props at 17 in but that just cut my revs back and only gave me top speed of 13kts at 3000rpm which was all the engines could pull.hope this helps
the worst day boating is better than the best day at work

glenlloyd
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#4

Post by glenlloyd » 13 years ago

Any possibility of getting to see pictures of the supercharger install?

thanks

sa
97 Jetta TDI, 86 VW Golf D
89 VW Fox diesel, 92 MB 300SD W140

gir - won't the sploding hurt?
zim - silence!

Kolatogari
Posts: 30
Joined: 13 years ago
Location: Iceland

#5

Post by Kolatogari » 6 years ago

I know this is a long time dead post but, is there any change I could a pic if that supercharge setup?

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asavage
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#6

Post by asavage » 6 years ago

I'm reasonably sure that when the OP says supercharger, he means turbosupercharger (ie turbo).
Regards,
Al S.

1982 Maxima diesel wagon, 2nd & 4th owner, 165k miles, rusty & burgundy/grey. Purchased 1996, SOLD 16Feb10
1983 Maxima diesel wagon, 199k miles, rusty, light yellow/light brown. SOLD 14Jul07
1981 720 SD22 (scrapped 04Sep07)
1983 Sentra CD17, 255k, bought 06Jul08, gave it away 22Jun10.

Hobbit
Posts: 3
Joined: 3 years ago

Re: Supercharged LD28s

#7

Post by Hobbit » 3 years ago

I believe that the original post is correct as I have just perched a 30ft boat with twin ld28 born are supercharged
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Photo of engine bay
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asavage
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Re: Supercharged LD28s

#8

Post by asavage » 3 years ago

Yup, Thanks for that picture. I'd never heard or seen a supercharged LD28 before today.
Regards,
Al S.

1982 Maxima diesel wagon, 2nd & 4th owner, 165k miles, rusty & burgundy/grey. Purchased 1996, SOLD 16Feb10
1983 Maxima diesel wagon, 199k miles, rusty, light yellow/light brown. SOLD 14Jul07
1981 720 SD22 (scrapped 04Sep07)
1983 Sentra CD17, 255k, bought 06Jul08, gave it away 22Jun10.

Hobbit
Posts: 3
Joined: 3 years ago

Re: Supercharged LD28s

#9

Post by Hobbit » 3 years ago

both run one supercharger needs work but it runs sounds mean bit smoky as first time thay have ben run in 2-3 years will try upload a video
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Bugly
Posts: 1
Joined: 11 months ago

Re: Supercharged LD28s

#10

Post by Bugly » 11 months ago

Hi Hobbit,

Great video. I have an LD28 and looking to either turbo or supercharge as I am after just a bit more grunt and supercharging looks like the easier route. What are those superchargers on your LD28's do you know?

Thanks in advance Bugly.

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