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Carone Member
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If all works out as planned I should be the new owner of a GT this month. I am wanting to do a stroker and have been doing a lot of research on here but am hitting a few road blocks and could use some help. I am seeing 4 options for stroker cranks/pistons: 2.2 crank and pistons from the club store or from delta Motorsports, a 2.4 kit that comes with connecting rods from Gary Kemp, and a 2.5 kit from lotus bits which also includes connecting rods. Prices are all over the board especially from the UK where exchange rates are really unfavorable. Which “kit” would everyone recommend? I am really struggling to find supporting mods from suppliers and a lot of the sources recommend on the forum have lead to dead ends. Starting with 45mm Dellortos, can anyone recommend a place to source a set with intake? Cams do seem available would you recommend 104s, 107s, or a combination of the two? Lotusbits offers billet cams but they seem pretty extreme, does anyone have experience with them? What other supporting mods would you run in a stroker build? Newer style cam gears and carriers, oiling upgrades, ignition upgrades, ect? Thanks in advance for the help |
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vnavaret Member 
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I would not mess with the Dellortos off the bat. Rather, I would work some of the other angles to get more power; Raised compression - I believe you can get 10:1 or more with the 2.2 strokers. Delta only offers 9.5:1 for a 2 liter build... Three angle valve job, gasket matching, porting, K&N air filter, cams. How much do you want to spend? Apparently a great deal if you are going to build a stroker. There is no doubt that you can get more high RPM power with the Dellorto, as the jet is centrally located, as opposed to the side jet in the Zeniths. But the Zeniths are so much simpler to tune that they are good for debugging your build, and they offer a good balance of power and economy. After you get it all running to your satisfaction you can swap in the Dellortos knowing that the the only tuning needed is the carbs. Raised compression is the single best thing you can do. It adds power from idle to red line, and improves fuel economy - nothing else you can do will be as satisfying. Vance |
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Esprit2 Member
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The baseline question is, "What do you want the engine to be?" Asking others what they want or like doesn't answer that question. You can build a stroker "Church Lady" engine, or a stroker "Hotrod" engine. And for the most part, "both" isn't an option. So, faced with a choice, what do you want your engine to be? Are there any other J-H or Lotus owners near you who are running modified engines. Anyone from whom you could beg a drive so you can better understand the price you pay for what you get. Not a "money" price, but the character you must live with. Regards, Tim Engel |
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Carone Member
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Thank you both of the replies. Sadly it looks like the deal on the GT I was looking at is not going to happen. That being said I still plan on getting one and a stroker is still on the table. I’ll explain my thinking a bit and fully understand what I’m thinking has a lot of project creep involved. The last two GTs I have looked at required head/valve work. To me it seem like the perfect time to upgrade the valves and potentially do cams. I know to get the most out of cams you really need more compression. It seems to me that the work involved in a high compression 2.0 is really about the same as a stroker all be it a stroker is much more expensive. The car will really be a fun weekend car that will see some scca events primarily autocross Last edited on 05-03-2024 03:48 am by Carone |
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