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Monday 8:30am - 5pm Tuesday 8:30am - 5pm Wednesday 8:30am - 5pm Thursday 8:30am - 5pm Friday 8:30am - 5pm

The Type 4 Store

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Momence, IL
The Type 4 Store

The Type 4 Store, started in 2004 by Aircooled Technology, is now operated by LN Engineering, specia

02/11/2026

Many new Porsche owners don’t know about the IMS bearing issue—or that their engine may still have a serviceable ball or roller bearing ticking away inside. The IMS Solution is the only permanent fix, designed for the life of the engine.

https://lnengineering.com/products/the-definitive-guide-and-faq-for-porsche-ims-bearings/

02/10/2026

Our tech director, Jake Raby, explains how if you aren't light checking your piston rings, not only are you leaving power on the table, the engine might never even work right! This is something that Jake does on every engine build.

https://aircooledtechnology.com/

02/05/2026

LN Engineering stocks most Pauter connecting rods for immediate delivery including our custom 130mm X beam rod that is designed to run with Porsche's 80.4mm GT3 RS 4.0 crankshaft. A combination made in heaven for your next aircooled Porsche 911 engine rebuild, especially when paired with our Mahle Motorsports+Nickies 104mm kits.

https://lnengineering.com/products/porsche-pistons-and-connecting-rods/pauter-machine-porsche-engine-parts/porsche-pauter-connecting-rods/

02/04/2026

Not all oils and fuel additives are created equal. We stand behind Driven's DT, DI, and Defender products as we helped with their development and know 100% they are what our Porsche and other high performance engines need. Don't understand why? For over 20 years, LN has been trusted as an expert in lubrication.

https://lnengineering.com/oil/

02/03/2026

If you don't own a profilometer or precision measurement devices, how do you know a cylinder has been honed properly? Even those with proper gaging don't know what they are looking at! We regularly field calls from individuals and shops alike that have had fresh rebuilds fail. When checked, we often find Nikasil cylinders that were incorrectly honed. That's why Porsche experts trust us for both new cylinders and reconditioning of blocks and original cylinders. That's value added service where it counts.

https://lnengineering.com/products/nickel-silicon-carbide-nsc-cylinder-reconditioning-and-plating-process-for-porsche-nikasil-cylinders/

01/14/2026

When rebuilding any M96 or M97 engine, it's important to also have your intermediate shaft inspected. Many fail our inspection for runout, which would have resulted in increased bearing wear and potentially an IMS bearing failure.

https://lnengineering.com/machine-shop-services/intermediate-shaft-ims-reconditioning-pinning-service.html

01/13/2026

Many are worried about using a low temperature thermostat in cold weather. Rest assured, we tested for that. No issue with engine warm-up, cabin heat, or CEL, even in sub-zero temps with wind chill.

https://lnengineering.com/products/brs-parts-and-upgrades/cooling/160f-low-temperature-thermostat-insert-only-use-tool-106-062-to-remove-install.html

01/08/2026

There aren't many people who take apart a perfect good engine to figure out what makes them tick. This engine became what was to be known as Cayman X, with the first 4.2 liter MA1 engine. What's important about this picture is that you can see the healthy, stock Alusil cylinder bore, shown here with about 15,000 miles and dozens of hours of track use.

https://lnengineering.com/products/watercooled-porsche-cylinders-sleeves-and-pistons/9a1-2009-boxster-cayman-911.html

01/07/2026

People don't realize it's been 20 years since we came up with the very first fix the for Porsche IMS bearing. Our original quadruple bearing fix required modification of the shaft itself. Things have come a long way since then.

https://lnengineering.com/products/the-definitive-guide-and-faq-for-porsche-ims-bearings.html

01/06/2026

We recently had a customer want to block off his air injection but didn't like the way people just put in a brass plug, leaving a blind hole in the port. We decided to make up some aluminum ones that could then be blended into the port. Simple but clean solution.

https://lnengineering.com/porsche-cylinder-head-rebuilding.html

01/01/2026

Having trouble rev matching while braking? The BRS Throttle Pedal Spacer is completely transformative, at least according to one very happy customer.

https://rennlist.com/forums/718-gts-4-0-gt4-gt4rs-spyder-25th-anniversary/1495218-brs-pedal-spacer-review.html

12/31/2025

When magnified 100X, you can see the silicon particles in a Lokasil or Alusil cylinder. One of the modes of failure is when particles fracture and there aren't enough remaining ones to support the required oil film for the pistons and rings.

https://lnengineering.com/free-download-understanding-bore-scoring-in-al-si-cylinder-systems-by-charles-navarro.html

Address

125 Gladiolus St
Momence, IL
60954

Opening Hours

Monday	8:30am - 5pm
Tuesday	8:30am - 5pm
Wednesday	8:30am - 5pm
Thursday	8:30am - 5pm
Friday	8:30am - 5pm

Telephone

+18154722939

Website

http://www.type4store.com/

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