noodels Posted October 25, 2011 Share Posted October 25, 2011 Link to comment Share on other sites More sharing options...
james Posted October 25, 2011 Share Posted October 25, 2011 ordered a 4-1 with 2 inch collector and 2 inch adjustable de-cat. Whats the best way of un doing the manifold head bolts on a 115k engine without them breaking? Are they common to break? Was thinking of spraying wd40 on a couple of times a day for a few days before removing and maybe get a breaker bar.no need will come straight off Link to comment Share on other sites More sharing options...
noodels Posted October 25, 2011 Share Posted October 25, 2011 no probs they are s/steel so easy to remove Link to comment Share on other sites More sharing options...
steveolkinevel Posted October 25, 2011 Share Posted October 25, 2011 ordered a 4-1 with 2 inch collector and 2 inch adjustable de-cat. Whats the best way of un doing the manifold head bolts on a 115k engine without them breaking? Are they common to break? Was thinking of spraying wd40 on a couple of times a day for a few days before removing and maybe get a breaker bar.no need will come straight offMine had 130k on when i fitted my 4-1 and they flew out! Link to comment Share on other sites More sharing options...
simpo Posted October 25, 2011 Share Posted October 25, 2011 as above bolts should undo easy, never had a prob with them on any of my civics Link to comment Share on other sites More sharing options...
vtivtec170 Posted October 26, 2011 Author Share Posted October 26, 2011 think ive had a good result. I bought the manifold from the 1st link in 1st post. It doesnt mention a brand on the advert. The manifold just arrived in a japspeed box and manifold is stamped japspeed. Some japspeed ones on ebay the same are 179 quid, i paid 87. Link to comment Share on other sites More sharing options...
james Posted October 26, 2011 Share Posted October 26, 2011 i have the same one mategoodish quality Link to comment Share on other sites More sharing options...
vtivtec170 Posted October 28, 2011 Author Share Posted October 28, 2011 just finished fitting 79 quid japspeed 4-1 and japshop decat (a lot better than the tegiwa i had to send back due to manifold flange missing and no more in stock). Decat much nicer quality and only 2 parts with clamp and highly polished. Will do review soon. Car now sounds like a scooby. Will be getting emissions tested tomorrow as i heard some have passed with decat on. Well pleased now its fitted. Link to comment Share on other sites More sharing options...
KiNK43 Posted October 29, 2011 Share Posted October 29, 2011 hey, do you feel any difference in response or top end power with ebay manifold fitted? Link to comment Share on other sites More sharing options...
vtivtec170 Posted October 29, 2011 Author Share Posted October 29, 2011 better throttle response, quicker pick up, feel the vtec and hear it more. Trying top end later so will review that later Link to comment Share on other sites More sharing options...
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