TVR TUSCAN - ENGINE SWAP - HONDA S2000 (F20C2)

[m4tti]

Gtom said:

macdeb said:

Gtom said:

In the states the s2000 engines can be making over 1000bhp when turbocharged. 400bhp won’t really be stressing the engine.

Hmm, maybe F1 are missing a trick here. Bet they last a lifetime too.

https://www.carscoops.com/2020/10/1000-whp-honda-s2000-almost-hits-200-mph-in-1-2-mile-run/amp/

https://honda-tech.com/articles/1100-hp-s2000-stre...

There’ll be very little Honda S2000 left in that engine apart from the block and the head casting… it’s a bit like saying bmw used a 316 engine in the 80’s brabham, as it used the inline 4 block… just about everything else was binned.

[Panda nero]

In for the build progress updates .

An interesting swap , a bespoke 4 litre 6 to an engine half the displacement but revs to infinity and beyond .

Pardon my ignorance ,the Tuscan engine is 4 litres isn't it ?

[Belle427]

Panda nero said:

In for the build progress updates .

An interesting swap , a bespoke 4 litre 6 to an engine half the displacement but revs to infinity and beyond .

Pardon my ignorance ,the Tuscan engine is 4 litres isn't it ?

Comes in 3.6 and 4.0 formats mainly.

[mk1fan]

Looks good.

[alexaras]

Hi guys,

So the propeler shaft is now ready.



A new tube had to be manufactured that was mated with Honda parts on the front side and Tvr parts on the rear side.

Front side (Tube yoke, end yoke etc) to be mated with the S2000 Gearbox
Rear side (Tube shaft, slip yoke, u-joint bearing plate and flange yoke) to be boldmated with the TVR Diff).



Next couple of weeks we should sort out the fuel lines and sort out the electrics to fire the engine !!

Once this is done we will need to custom make the exhaust and custom lines for the radiator as well as fitment of water cooler (I think an air cooler will be more difficult to fit and less effective).

Edited by alexaras on Tuesday 29th November 17:46

[mk1fan]

Tubetastical.

Keep up the good work, maybe throw in some bad work too.

[PeteS2k]

Looks like a really interesting project, one to watch from a personal history perspective.

I've previously owned an S2000, followed by building a kit car (Dax Rush) with S2000 engine and box. I've also just acquired an '02 Tuscan S as an early retirement/Christmas present to myself, and to scratch the TVR itch.

The F20C is a great engine. Yes, you have to use the revs to get the power, but the engine loves to rev - and it's mated to a superb gearbox that makes gear changes a pleasure. My engine was just stock mechanically, mapped with the VTEC point at about 4500 (if I recall) which gave a smooth power delivery up the rev range. The standard 6k VTEC is a bit of a switch with a kick you can do without in a light car mid-corner! 0-4500 for pottering around or cruising, 4500-9000 it was a different beast.

It'll be a different character to the Speed 6 - but it will definitely still have character!

[alexaras]

Hey guys we have had slow progress - as this next step is very critical for the car engine to run smoothly, efficiently and salefy (most importantly to eliminate any chance of fire).

So the TVR has been in the shop for the past 5-6 months in order to design and fabricate from scratch:

- Full exhaust system
- Downpipe
- Screamer pipes
- Wastegates mounts
- Watercooler (with water cooler pump + mount)
- Cooling pipes
- Extra piping needed
- Polishing all the components

Significant distances have been taken into account between the components
The plan since the very beginning of this project has been not to modify the chassis / fiberglass which I can proudly say that we have managed.

Meantime the temperatures at the engine bay will be higher that when it was using the NA straight six so the next step will be to use thermal insulation method on all the critical / high-heat componenets (including Exhaust, Downpipe, Screamer pipes, Turbo exhaust housing, Wastegates housing).


Radiator for water cooler (covering half the radiator of the car)



Cooling pipes





Downpipe & Water cooler & Screamer pipes





Exhaust - What do you guys think?





Bonus porn pic

[mk1fan]

[alexaras]

Here is a video under the car that shows the details of the exhaust...
Hope you like the craftmanship and attention to detail:

https://www.youtube.com/watch?v=6VxfcDNpj0k


Whist the components are thermal treated, the car will go back to the mechanic to work with the pedal box.
See what items need refurbishing and place an order.

Anyone coming to Greece for summer holidays?
Keep some space for parts - ha!

[C5_Steve]

Can't believe I've just found this thread. Firstly, it's wrong for all the right reasons. Absolutely mental.

The craftmanship looks brilliant, looking forward to more updates.

[Squirrelofwoe]

C5_Steve said:

Can't believe I've just found this thread. Firstly, it's wrong for all the right reasons. Absolutely mental.

The craftmanship looks brilliant, looking forward to more updates.

Same here!

Combing two of my favourite things- TVRs and screaming Honda engines!

[Ice_blue_tvr]

Can't wait to hear it. Will sound better than an S6

[alexaras]

Oh any suggestions / upgrades please advise as I will have to take care of them

For example:
- Bonnet conversion - To open as 1 piece - where to buy from?
- Battery relocation, any other suggestions there? I was thinking maybe to relocate in the boot?
- Handling / steering upgrades (planning to do some track use)
- Car is fitted with Nitron's anyone we know that can rebuild these?
- Car is also fitted with AP Brakes - What pads do you recommend?
- Upgraded bushing kit

Thanks vm in advance.

Edited by alexaras on Tuesday 27th June 18:25

[mk1fan]

alexaras said:

Oh any suggestions / upgrades please advise as I will have to take care of them

For example:
- Bonnet conversion - To open as 1 piece - where to buy from? - Alan Howell you'll have to trawl the arwful market place forum to find it now though - https://www.pistonheads.com/gassing/topic.asp?h=0&...

- Battery relocation, any other suggestions there? I was thinking maybe to relocate in the boot? - certainly upgrade the cables to 35mm versions. The factory may have fitted 25mm if you were lucky. They may have fitted 16mm if you were unlucky.

- Handling / steering upgrades (planning to do some track use) - Been discussed many times in the forum. From spacing the steering rack to fitting Sag steering ends. Searchy searchy in the forums.

- Car is fitted with Nitron's anyone we know that can rebuild these? - Nitron.

- Car is also fitted with AP Brakes - What pads do you recommend? Can't remember for sure if they are DS2500 or M1144 from the factory. DS2500 I'll settle on. Seem to work fine on my Tam. Which does regular trackdays.

- Upgraded bushing kit

Thanks vm in advance.

Edited by alexaras on Tuesday 27th June 18:25

Worth reading this thread - https://www.pistonheads.com/gassing/topic.asp?h=0&...

Edited by mk1fan on Tuesday 27th June 19:38

[Caddyshack]

m4tti said:

Gtom said:

macdeb said:

Gtom said:

In the states the s2000 engines can be making over 1000bhp when turbocharged. 400bhp won’t really be stressing the engine.

Hmm, maybe F1 are missing a trick here. Bet they last a lifetime too.

https://www.carscoops.com/2020/10/1000-whp-honda-s2000-almost-hits-200-mph-in-1-2-mile-run/amp/

https://honda-tech.com/articles/1100-hp-s2000-stre...

There’ll be very little Honda S2000 left in that engine apart from the block and the head casting… it’s a bit like saying bmw used a 316 engine in the 80’s brabham, as it used the inline 4 block… just about everything else was binned.

Very little on 1000hp but at 500 hp it will probably be an unopened stock engine.

My Cossie made 500ftlb and 480hp on totally stock internals just using a modern turbo and ecu with some big injectors.

[alexaras]

Appreciate the feedback guys. Will keep you posted.
This week we are removing the wheels, and having a thorough look under the car (it has been sitting for sometime before I bought it - thankfully at a covered garage)

Seems like some locking nuts were removed harshly...

[mk1fan]

At least it is an easy fix

I forgot to mention adding wheel spacers (3mm seems to ring a bell) to improve handling. There's plenty of threads in the forum about them. Good time to add some slightly longer studs to accommodate them?

[Gtom]

Caddyshack said:

m4tti said:

Gtom said:

macdeb said:

Gtom said:

In the states the s2000 engines can be making over 1000bhp when turbocharged. 400bhp won’t really be stressing the engine.

Hmm, maybe F1 are missing a trick here. Bet they last a lifetime too.

https://www.carscoops.com/2020/10/1000-whp-honda-s2000-almost-hits-200-mph-in-1-2-mile-run/amp/

https://honda-tech.com/articles/1100-hp-s2000-stre...

There’ll be very little Honda S2000 left in that engine apart from the block and the head casting… it’s a bit like saying bmw used a 316 engine in the 80’s brabham, as it used the inline 4 block… just about everything else was binned.

Very little on 1000hp but at 500 hp it will probably be an unopened stock engine.

My Cossie made 500ftlb and 480hp on totally stock internals just using a modern turbo and ecu with some big injectors.

https://dsportmag.com/the-cars/features/757-whp-honda-s2000/

95% stock engine + boost + e85 = 1000hp.

[GJL]

just stumbled into this thread, I think it's great.

People will say "use an LS, it's a known quantity" or "the Honda engine is the worst ever" or "that engine doesn't suit the car" or "the power delivery is all wrong". Someone was the first to put an LS in a TVR, someone put a Jag engine in a TVR S, thjese people are inventive, use what they know, understand and have available and then it is us who benefit from them having the balls to try something different.
Besides, look at the engines TVR used if you want to talk about keeping things original, in the needs must times it was a case of making an engine fit because it was what was available;affordable or what was still on offer to a small manufacturer with limited funds.

I will watch with interest, thank you for taking the time to share.