Engine swap rover or triumph?

[andy2stags]

Hi all,

Here goes for my first post.

I have recently purchased a 2nd cheap stag with good body and naff engine. I am currently weighing up the pros and cons of triumph vs rover. Can anyone out there help re bonnet bulge ( is it necessary) , what engine size, manual gearbox options, difficultyetc

Many Thanks Andy

P.s I only have basic computer knowledge. So maybe a little slow in reply.

pps. Sorry if i have upset the purists amongst you.

[stustag]

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Hi Andy

Nothing wrong with having the Rover engine provided it is done properly! It is more than just changing the engine you need to do the suspension as well to improve the handle as the Rover engine is much lighter!

You could also consider a 2.5 Straight Six as this is dead easy to swap over and is the same weight as the Stag V8.

Or just find a good TV8 and have what is meant to be there!

PS if the Rover engine is done right there's no need for the bonnet bulge see the monarch site, this is there car that Monstag owns

http://www.monarch-stags.co.uk/index.html

Stuart

[andy2stags]

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hi stuart

my other stag is a mk 1 1/2 with tv8 in vgc this is the only reason i am considering achange

monarchs seem to have all parts needed.i am aware there may be issues with suspension,brakes and diff etc.

the dilemma i have if i go the rv8 is there a engine gearbox combination that suits eg sump clearance etc.

andy

[Stagdad]

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Andy

SD1 is the sump shape you need and lt77 gearbox with some mods to the selector.

Cheers Steve

[andy2stags]

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steve

thanks for info,excuse the ignorence,i don,t know much about bl stuff (used to be into fords till i saw the light).

i am thinking 3.9 might give adequate performance gains.what vehicle does a it77 gearbox come from?

thanks andy

[V Mad]

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Although you purchased the Stag cheap, it will be difficult to do a reasonable Rover conversion without spending more thanif you had bought a RV8 Stag in the first place, with all the changes to instrument, electrics, etc.Andif you put in a much more powerful engine you will need a back axle/diff upgrade too, plus tubular headers, etc. Easier to find a nice recon Stag V8 to drop in.

But then projects are always interesting if you like the challenge. In that case I would go for a Ford 302 V8 conversion (Mustang etc)as I haven't seen any in the UK, and I think it would be well worth the money spent. That would be a real performer with a reliable engine; and what a sound track they make!

[polly]

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V Mad wrote:

Although you purchased the Stag cheap, it will be difficult to do a reasonable Rover conversion without spending more thanif you had bought a RV8 Stag in the first place, with all the changes to instrument, electrics, etc.Andif you put in a much more powerful engine you will need a back axle/diff upgrade too, plus tubular headers, etc. Easier to find a nice recon Stag V8 to drop in.

But then projects are always interesting if you like the challenge. In that case I would go for a Ford 302 V8 conversion (Mustang etc)as I haven't seen any in the UK, and I think it would be well worth the money spent. That would be a real performer with a reliable engine; and what a sound track they make!

there's a feller in hainault who i bought a few bits off recently has got a triumph 2000 mk 2 with a ford v8 in,looks pretty standard apart from rear axle and tyres,oh and a bloody great hole in the bonnet with the air intakes sticking out!!.nice though.

[Stagdad]

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andy2stags wrote:

steve

thanks for info,excuse the ignorence,i don,t know much about bl stuff (used to be into fords till i saw the light).

i am thinking 3.9 might give adequate performance gains.what vehicle does a it77 gearbox come from?

thanks andy

Andy it's LT 77 not it 77 .i think they were fitted to many cars .SD1's TR7's and i'm sure others will step in here and carry on the list.But if you get it off an SD1 it will have the right bellhousing to mate up to the rover V8.

Cheers Steve

[m9fdb]

imported post

andy2stags wrote:

Hi all,

Here goes for my first post.

I have recently purchased a 2nd cheap stag with good body and naff engine. I am currently weighing up the pros and cons of triumph vs rover. Can anyone out there help re bonnet bulge ( is it necessary) , what engine size, manual gearbox options, difficultyetc

Many Thanks Andy

P.s I only have basic computer knowledge. So maybe a little slow in reply.

pps. Sorry if i have upset the purists amongst you.

Did you buythe stag off of ebay asthere was a red one on there a while ago that had a good body but the engine had blown the head gaskets ?

[m9fdb]

imported post

polly wrote:

V Mad wrote:

Although you purchased the Stag cheap, it will be difficult to do a reasonable Rover conversion without spending more thanif you had bought a RV8 Stag in the first place, with all the changes to instrument, electrics, etc.Andif you put in a much more powerful engine you will need a back axle/diff upgrade too, plus tubular headers, etc. Easier to find a nice recon Stag V8 to drop in.

But then projects are always interesting if you like the challenge. In that case I would go for a Ford 302 V8 conversion (Mustang etc)as I haven't seen any in the UK, and I think it would be well worth the money spent. That would be a real performer with a reliable engine; and what a sound track they make!

there's a feller in hainault who i bought a few bits off recently has got a triumph 2000 mk 2 with a ford v8 in,looks pretty standard apart from rear axle and tyres,oh and a bloody great hole in the bonnet with the air intakes sticking out!!.nice though.

the feller in hainault didnt't have a 2500S with a ford lump in it by any chance did he ??I sold my old 2500S to a bloke in hainault many years ago and he had plans to do a conversion to it - the reg of my car was TMG 910S and it was painted pearl blue with black trim. I would love to get in touch with him if it is my old 2500S

[andy2stags]

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hi all

the car in question is a k reg blue car from essex area.not off ebay.

andy

[EFI Stag]

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Hi Andy,

and welcome to the forum

i have a rover engined stag if you want to look at it for measurements etc,

cheers Martin.

[polly]

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m9fdb wrote:

polly wrote:

V Mad wrote:

Although you purchased the Stag cheap, it will be difficult to do a reasonable Rover conversion without spending more thanif you had bought a RV8 Stag in the first place, with all the changes to instrument, electrics, etc.Andif you put in a much more powerful engine you will need a back axle/diff upgrade too, plus tubular headers, etc. Easier to find a nice recon Stag V8 to drop in.

But then projects are always interesting if you like the challenge. In that case I would go for a Ford 302 V8 conversion (Mustang etc)as I haven't seen any in the UK, and I think it would be well worth the money spent. That would be a real performer with a reliable engine; and what a sound track they make!

there's a feller in hainault who i bought a few bits off recently has got a triumph 2000 mk 2 with a ford v8 in,looks pretty standard apart from rear axle and tyres,oh and a bloody great hole in the bonnet with the air intakes sticking out!!.nice though.

the feller in hainault didnt't have a 2500S with a ford lump in it by any chance did he ??I sold my old 2500S to a bloke in hainault many years ago and he had plans to do a conversion to it - the reg of my car was TMG 910S and it was painted pearl blue with black trim. I would love to get in touch with him if it is my old 2500S

yeh it could be cant remember the reg but it was blue,his place was just past the golf course near the maypole pub.i'll see if i still have his phone number.

cheers steve.

[andy2stags]

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hi martin

thanks for the offer to veiw your stag rv8.did you do the conversion yourself,and how shall i contact you?

thanks andy.

[stoutgoose]

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The LT77 box was fitted to all Rover SD1 cars, plus various Morgans, TVR's and Sherpa/LDV vans. It was also fitted to Land Rovers, and there are a few pit-falls to avoid.

Avoid all Land Rover gear boxes. They have a different gear selector and won't fit your car.

Look for a geabox with the number 19A or 28A followed by a series of digits ending in a letter between A and D. Anything else is not from an SD1. The ideal box would be a 28A with D suffix which indicates a Vitesse box with the 'D' spec strong bearings. 19's were fitted to standard SD1's and 28's to the Vitesse.

Avoid boxes fitted to Sherpa/LDV vans; the first two ratios are very low and unsuited to a light powerful car. These numbers will start at 29A or greater.

I've gone the whole 'Monarch' (now up to 5.0 litres), so if you need any advice, let me know.