Porsche Enthusiasts Club Forum

In the UK, why aren't there many ? Sure it's not cheap to build one but after all the interest in the budget Hartech 3.0 a while back motivation to build them seems to have faded .

I did think about a 2.7 or 3.0 conversion for mine but looking at what is achievable with the 2.5 didn't think it would be worth it for what I want. Also they seen to scare buyers off when it comes to eventually selling the car.

I've never actually been in one but it seems the opinion of people that have is the off boost performance is much improved, especially when using a bigger turbo. I don't know the conversion puts buyers off, more likely they don't want to pay anything like what's gone into it.

I think most people that carry out modifications of any kind realise they will never get all the money they put in to it back but a lot of buyers won't even consider anything with more than a boost enhancer!

When I first go my turbo I researched an LS V8 swap but after a couple of years realised that as mine is a Turbo S it would probably be worth more with the original engine and matching numbers. So now I'm looking to keep the 2.5 and only do mods that can be reversed. Things like I really want to cut the spare wheel well out and fit a proper diffuser but don't see how I could put it back when it came time to sell.

If I fit uprated parts to my cars I always keep the standard parts to refit if I sell, it's the only way to get a decent return. I'd keep the original 2.5 engine on a stand if I fitted a 3.0 .

Well both Hartech and JMG have inspired my budget 3 litre build. The car started as a rusty 1991 s2 and now sports 3 litre turbo with 2.7 head, 968 club sport crank , Rarst con rods and 968 pistons (modified by Barry) with k26/8. The car uses turbo loom and bellhousing with 930 clutch. The car turns over, has a spark and fuel and is just waiting for its modified ecu from Tom Barker to run.
It has been built on a budget spread out over a period of 18 months picking up items when they come up for sale at the right price.(An s2 engine without head .99p on ebay !!)
Realising the limitations of this engine, i have had another block steel lined for a set of JEpistons that came up on ebay. I also bought some PPM con rods which are a great price for the product. Originally i intended to move the 8 valve head across when the bottem end was built but having seen Turbo Tims engine and as I had a spare s2 head, i have had the pistons machined for valve reliefs and intend to use this. Also Toms ECU will be able to run the 16 valve engine as I already use the turbo bellhousing and sensors without going standalone. I will use a k27/8 that I have also hoarded from a 944 race car. Nick from Nickson Motorsport is attempting to merge a s2 inlet to a turbo inlet for me. Not ideal but this is being done on a budget. Having had Nick weld my wastgate and sump baffle I highly recommend the quality of his welding.
Other mods include sunroof delete (re skin), manual windows, manual mirrors, manual steering rack, removal of all sound deadening from interior (yes this job is as bad as they say!) , MO30 adjustable platform konis, mo30 s4 calipers, recaro pole position seats, rear cage, turbo s box with oil cooler and lsd with s2 gears and cwp.

Sounds great, what power you going for? Are you going to try a newer turbo at some point?

Will stay with the k26/8 on the present engine and use the k27/8 on the 16 valve. The intention is not to run more than .9 bar boost on either as one has the limitations of the pistons and the other the valve gear. Hartech had 300bhp from theres, but with dual port Turbosmart wastegate, bosch motorsport pump, turbosmart adjustable fuel regulator etc I hope for 320 -340 for the 8 valve and 380 for the 16 valve.

Interesting, any pics of the sunroof delete job and block work ?

Hopefully I have mastered the art of resizing !
This is the second attempt on the roof using a scrapped 924 roofskin. The first used a panel cut from a 944 non sunroof ar also being scrapped but was destroyed by a "master" welder not listening to my instructions. My fault really as I was to impatiant to wait to take car to the body shop that repaired/replaced the rest of the car and went with an unkown.
These are the machined pistons in the 8 valve engine, I will post up the lined block on its return from cleaning.
If anyone is intrested i could do a build thread with the photos I have stored.

Looks good. Deserves a build thread of its own.

Thank you. I wil try and start one. Here are a few pictures of the machined 968 pistons in relation to the JE pistons before having the valve reliefs cut in for the 16 valve head. And a quick shot of the quality of Nicks welding on the wastegate.

good to see you on here simon! and to see a few pics of the build!

as simon says, we will be mating the s2/turbo inlet manifold, and modifying the exhaust system to mate s2 head to turbo exhaust/crossover setup. we have a dummy block and head, and will be getting everything mocked up in situ before any welding takes place.

we may fab jigs to provide a service to others who want the same sort of inlet/exhaust mods carried out to enable them to run a 16v head with turbo, as this has always been a reason people dont pursue a 16v build due to the custom fabrication work required. we may be able to run some sort of exchange process for interested parties.

looking forward to seeing results for the 3l 8v with toms ecu! and then the differences with 16v head!

nick

Thanks Nick, look forward to getting the inlet back.

Need some advice on the other block please. In the pictures you can see the liners overun the windage port holes, do these need to be machined out ? The engineer and myself feel they add strength and i believe the 2.5 blocks did not have these but they can be removed if needed. The block has gone off to be cleaned !

I had a polite difference of opinion with someone on the PCGB forum about liners obscuring windage ports, think why Porsche went to the expense of updating the 2.7/3.0 block and what the ports do, I don't think the pistons suffer either.