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| Stroker Build Questions | Rate Topic |
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| Posted: 04-07-2024 03:37 am |
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1st Post |
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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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| Posted: 04-26-2024 02:14 am |
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2nd Post |
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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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| Posted: 05-03-2024 01:17 am |
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3rd Post |
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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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| Posted: 05-03-2024 02:45 am |
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4th Post |
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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 02:48 am by Carone |
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| Posted: 08-07-2025 08:21 pm |
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5th Post |
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moikenny Member 
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Hi Tim Michael here, owner of YeloDog. The question of 'to stroker' or 'not to stroker' is a valid one. When I eventually sorted Red Sloth (14438) with crank fired ignition, Dell 40s and Type C cams, all was good in the world. I had 135HP under the hood and the car was a lovely cruiser, swallowed up bumps and was happy moving between 3000-4500rpm. But in the 3-4 years that it took me to achieve peace with Red Sloth I had already bought the 'remains' of YeloDog with the sole objective of swapping out the engine. When she arrived following the long journey from upstate NY to Warsaw, Poland, YeloDog rolled off the trailer angry, insisting that she was still straight as a dye, and man that engine was bristling like nothing I had experienced before. The exhaust note was deafening. 1st gear and boom, the car literally hopped forward. 4 years into YeloDog and I have had the metal straightened & painted. The head had to be taken off to deal with coolant leaks and I had a lovely single pipe stainless exhaust made to soften the sound and placate the neighbours. 4-5000 miles later, that engine work and exhaust has definitely reduced the bark and bite, but it's still an awesome car to go. The torque is felt all through the rev range while with Red Sloth and its traditional setup, torque really only appears from 3500rpm onwards which means you need to be going at speed to accelerate. With Red Sloth now under new ownership I've decided that YeloDog will be my last old Brit car and for it to join me into my 60s it needs to be be further toned down or better still, further refined. So, I'm splurging on a leather interior - seats, door cards, centre console, sun-visors etc., a 6 speed Lexus IS200 gearbox with hydraulic clutch, a Jenvey 40 fuel injection conversion to replace the Weber 45s and lastly the old style Jensen Healey go-faster vinyl trim along the bottom of the doors and wings. Next year I will get the roll bar repainted and canvas top restored. Then hopefully I spend more time enjoying the road and the wind on my bald head. Attachment: Screenshot_20220610-183252 (1).png (Downloaded 13 times) Last edited on 08-07-2025 09:36 pm by moikenny |
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